10 th European meeting on Solar Chemistry and Photocatalysis: Environmental Applications

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1 10 th European meeting on Solar Chemistry and Photocatalysis: Environmental Applications SPEA10 Palacio de Exposiciones y Congresos Cabo de Gata - Ciudad de Almería Almería SPAIN. June, 4 th 8 th 2018 Organized by:

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3 Committees SPEA PRESIDENT Leonardo Palmisano Università degli Studi di Palermo Italy SPEA 10 CHAIR Sixto Malato Plataforma Solar de Almería, Spain. SPEA 10 CO-CHAIR Jose A. Sánchez University of Almeria, Spain. Ana Agüera Inmaculada Polo Manuel I. Maldonado SPEA 10 SCIENTIFIC SECRETARY Isabel Oller Plataforma Solar de Almería, Spain. SPEA 10 ORGANISING COMMITEE José L. Casas Leónidas Pérez-Estrada Octavio Malato Ana Belén Esteban García Patricia Plaza Bolaños Sara Miralles Irene Salmerón Laura Ponce Robles Samira Nahim Granados Azahara Martinez García Ana Ruiz Delgado Melina Roccamante LOCAL COMMITEE A. Belén Martínez-Piernas Marina C. Campos-Mañas Ana Lorenzo Elisa García Gómez Irene de la Obra Paula Soriano Molina Sandra Arzate Alba Moreno Ruiz Inma López Santiago Ilaria Berruti Dennis Deemter Gracia Rivas INTERNATIONAL SCIENTIFIC COMMITTEE Abe R., Japan Alfano, O., Argentina Amat, A., Spain Bekbölet, M., Turkey Brezová, V., Slovak Rep. Byrne, J.A., U.K. Di Paola, A., Italy Dionysiou, D., U.S.A. Doña Rodriguez, J.M., Spain Faria, J.L., Portugal Giménez Farreras, J., Spain Hernandez Ramirez, A., Mexico Janovak L., Hungary Keller N. France Kondarides, D.I., Greece Krýsa, J., Czech Republic Lacombe, S., France Li Puma, G., U.K. Litter, M., Argentina López Muñoz, M.J., Spain Macyk, W., Poland Mailhot, G., France Malato, S., Spain Mansilla, H., Chile Mantzavinos, D., Greece Minero, C., Italy Mottaleb, S.A., Egypt Ohno, T., Japan Palmisano, L., Italy Paz, Y., Israel Peralta Moreira R., Brazil Poulios, I., Greece Pulgarin, C., Switzerland Robert, D., France Selli, E., Italy Silva, A.M.T., Portugal Silva, C.G., Portugal Torres R., Colombia Vorontsov, A.V., Russian Fed.

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5 Sponsors

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7 Welcome On behalf of the Organizing and Scientific Committees, it is our great pleasure to welcome you to the 10 th European meeting on Solar Chemistry and Photocatalysis: Environmental Applications SPEA10. Launched in 2000 and 2002 in Saint-Avold, France, the European meeting series SPEA progressively gained, over the last years, its renown among the most relevant meetings in solar chemistry and photocatalysis by travelling around Europe. Hosted in Barcelona 2004, Gran Canaria 2006, Palermo 2008, Prague 2010, Oporto 2012, Thessaloniki 2014 and Strasbourg 2016, SPEA will take place in Almería in SPEA10 will cover research fields as varied as: Water treatment and disinfection Air treatment Green synthesis by solar photochemistry and photocatalysis Novel materials for photochemistry and photocatalysis Photocatalytic membranes, thin films Functionalized textiles, surfaces and coatings Interface with life science Environmental photochemistry and photocatalysis Experimental standardization and commercial applications Modelling and mechanistic studies in photochemistry and photocatalysis Process fundamentals Photocatalytic hybrid systems Photocatalytic, Photochemical and Photosynthetic systems for H 2 production and CO 2 utilization Through plenary, oral presentations, short oral presentations associated to poster comunications and poster sessions, the ambition of the five-day SPEA10 meeting is to report on the most advanced research progresses in environmental photocatalysis and photochemistry, and to pave the way for future research and challenges. For facing actual challenges and addressing major societal concerns on environment, sustainable chemistry and energy, SPEA10 will offer a lively and convivial share platform to senior and younger researchers, PhD students as well as companies involved in Solar Chemistry and Photocatalysis.

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9 Useful Contact Data Airport Almería airport Tel: Tel: AENA Customer Assistance Service Web: Address: Ctra. Níjar, Km Almería Malaga airport Tel: Tel: AENA Customer Assistance Service Web: Address: Avda Comandante García Morato s/n Málaga. Ferries Trasmediterránea Almería to Ghazaouet, Melilla and Nador Morocco Tel: / Web: Address: Parque Nicolás Salmerón, 19 Ferries From the Maritime Station of Almería to Nador Morocco Web: Address: Puerto de Almería Train RENFE Train Station Tel: Web: Address: Plaza Estación, s/n Intermodal Train Station Tel: / Web: Address: Plaza Estación, s/n Bus Bus Station Alsa / Enatcar Almeraya Tel: Address: Estación Intermodal Plaza Estación, s/n Tel: Address: Estación Intermodal Plaza Estación, s/n Tel: Address: Estación Intermodal Plaza Estación, s/n Rental Car Taxi Avis Europcar Hertz Radio-Taxi Tele-Taxi Health Fire Emergency Emergency Department Police /092

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12 Scientific Programme Hour MONDAY June 4 th 16:30 REGISTRATION Cont. Tuesday till 11:00 a.m. 18:30 OPENING CEREMONY 19:00 Plenary Lecture 1 Chairman: Leonardo Palmisano Photocatalysis for organic synthesis. A convenient perspective or a barren path? Angelo Albini 20:00 WELCOME RECEPTION Palacio de Exposiciones y Congresos Cabo de Gata - Ciudad de Almería Hour 08:30 09:10 09:10 09:30 09:50 10:10 TUESDAY June 5 th Plenary Lecture 2 Chairmen: Claudio Minero/Macyk Wojciech Defective graphenes from biomass wastes as photocatalysts for solar fuels production. Hermenegildo Garcia Session 1 Photocatalytic, photochemical and Photosynthetic systems for H2 production and CO2 utilization Chairmen: Claudio Minero/Macyk Wojciech OC-01 Harvesting solar energy for CO2 catalysis in a plasmonic microreactor. Influence of the thermodynamic conditions. Alexander Navarrete Muñoz OC-02 Modified g-c3n4 with improved enhanced charge separation for efficient visible-light photocatalytic H2 production. Joaquim Faria OC-03 Exploring crude glycerol as feedstock in the development of a realistic hydrogen production process. Maria J. Rivero OC-04 Selective photoreduction of CO2 to CH4 over Pt/TiO2 photocatalysts supported on mesoporous silica. Minoo Tasbihi 10:30 COFFEE BREAK 11:00 Session 2A Photocatalytic, photochemical and photosynthetic systems for H2 production and CO2 utilization Chairmen: Joaquim Faria/Alberto Marinas Session 2B Water treatment TiO2 Chairwoman/Chairman: Carla Sirtori/Yaron Paz

13 Hour 11:00 11:20 11:40 12:00 12:20 12:40 OC-05 Pd-Pt bimetallic Nb-doped TiO2 for H2 photoproduction: gas and liquid phase processes. Anna Kubacka OC-06 Photocatalysts based on Cd1-xZnxSwith nickel cocatalysts for H2 production and CO2 reduction under visible light. Ekaterina Kozlova OC-07 Mesoporous 3D structure based TiO2 photocatalyst for environmental applications. Ghazzal Mohamed-Nawfal OC-08 Highly active Ru/TiO2 nanomaterials for photocatalytic hydrogen production. Mario J. Muñoz Batista OC-09 Photocatalytic H2 production over crystalline ZnO nanowires from ethanol aq in vapor phase. Narcis Homs OC-10 Advanced photothermal activity of noble metal-free nanoparticles for hydrogen production by glycerol reforming. Sergey Nikitenko TUESDAY June 5 th OC-11 Magnetic nanoparticles for photocatalytic ozonation of organic pollutants. Carla A. Orge OC-12 Degradation of emerging organic pollutants in wastewater effluents by electrochemical photocatalysis on nanostructured TiO2 meshes. Giuseppe Mascolo OC-13 Assessment of the influence of water matrix on the photocatalytic oxidation of atrazine in TiO2 and ZVI systems. María José López Muñoz OC-14 Photonic and quantum efficiencies in a new UV-LED photocatalytic reactor. Orlando Alfano OC-15 Photocatalytic degradation of pesticide under visible light irradiation using CaxMnOy-TiO2 composites. Preetam Kumar Sharma OC-16 The effect of metal dopants on solar photocatalysis efficiency and phase transitions of titania. Daphne Hermosilla Redondo 13:00 LUNCH 14:30 14:30 14:50 15:10 15:30 15:50 Session 3A Photocatalytic hybrid systems Chairwoman/Chairman: Ana Bahamonde/Narcis Homs OC-17 TiO2/Carbon nanohybrids for photocatalytic degradation of organic compounds in water. Alex Kuvarega OC-18 Coupling photodegradation/adsorption properties of AC-TiO2 composite materials. Cédric Telegang Chekem OC-19 Photocatalysis with nanoporous carbon materials. Conchi Ania OC-20 Sunlight photoactivity of rice husks-derived biogenic silica. Juan Matos OC-21 Abatement of recalcitrant pollutants with enzymes and ZnO-based hybrid system. Paola Calza Session 3B Water treatment photochemical processes Chairmen: Orlando Alfano/Giuseppe Mascolo OC-23 Effect of UV light irradiation on the electrochemical oxidation of methyl paraben. Cristina Sáez OC-24 New insights on the photodegradation of caffeine in the presence of bio-based substances; from homogeneous to heterogeneous process. Alessandra Bianco Prevot OC-25 The role of water composition on the acetaminophen degradation by the UV/HOCl process. Inmaculada Velo Gala OC-26 Removal of contaminants of emerging concern and inactivation of antibiotic resistant bacteria in water by sunlight/peracetic acid. Luigi Rizzo OC-27 Potential of 9-Mesityl-10-Methylacridinium Mes-Acr-Me as photocatalysts for the abatement of chlorinated pollutants. M Luisa Marin

14 Hour 16:10 OC-22 Novel hybrid titania and non-titania photocatalytic systems for photocatalysis under UV, visible and nearinfrared irradiation. Sajjad Ullah TUESDAY June 5 th OC-28 Solar photolytic ozonation of refractory herbicides in a river water matrix. Rafael Rodríguez Solís 16:30 COFFEE BREAK 17:00 Short Oral Communications Session 1 Chairman/Chairwoman: Ladislav Kavan/Elena Selli SOC-01-P1 Photo electro catalytic characterization of molybdenum doped BiVO4-based photoanodes for oxygen evolution. Annalisa Polo SOC-02-P2 Novel magnetic nanocomposites consisting of Ferrites-Freudenbergite systems as photocatalysts under visible light irradiation. Ciocarlan Radu-George SOC-03-P3 Analysis of critical parameters in TiO2 synthesis to improve photocatalytic performance. Gema Luna SOC-04-P4 Photocatalytic hydrogen evolution over K2Ti6O13 rods. Luis Felipe Garay Rodríguez SOC-05-P5 Mo-doped TiO2 photoanodes using heterometallic polyoxotitanate Ti4Mo2O8 OEt 10 2 cages as a single source precursor. Miriam Regue Grino SOC-06-P6 Photocatalytic hydrogen production from over lanthanides doped TiO2 in powder form and immobilized form on foam. Miroslava Edelmannová SOC-07-P7 Plasmonic core-shell nanoparticles for photocatalytic applications. Natan Blommaerts SOC-08-P8 The effect of Zr loading on photocatalytic activity of Cu modified TiO2 Olena Pliekhova SOC-09-P9 Nb-TiO2: Dependence of photoactivity on dopant concentration. Petr Murzin SOC-10-P10 Spectral radiative analysis of a bio-inspired H2 production system Caroline Supplis SOC-11-P11 Synthesis of carbon-doped TiO2 thin films via reactive magnetron sputtering for visible light photocatalysis. Rachan Klaysri SOC-12-P12 Comparison among 3 AOPs for the treatment of the recalcitrant safranin T dye. Gina Hincapié 18:00 Poster Session P1 to P85 and SOC-Poster 1 to 12

15 Hour TUESDAY June 5 th 19:00 Free Time 20:00 ALMERÍA CITY CENTER VISIT AND TAPAS TOUR Hour 08:30 09:10 09:10 09:30 09:50 10:10 WEDNESDAY June 6 th Plenary Lecture 3 Chairmen: Hector Mansilla/Dionissios Mantzavinos Environmental and economic impact of photocatalysis: an approach. Jaime Gimenez Session 4 Experimental standardization and commercial applications Chairmen: Hector Mansilla/Dionissios Mantzavinos OC-29 Industrial wastewater treatment by solar photo-fenton: comparison between photoreactors with solar collectors and raceway pond reactors. Alejandro Cabrera Reina OC-30 Comparison of the performances of an annular photocatalytic reactor with fluorescent lamp and a plane reactor with LEDs. Giovanni Camera-Roda OC-31 Modelling of advanced oxidation processes in intensified photoreactors. Gianluca Li Puma OC-32 An integrated photocatalytic-biological wastewater treatment approach utilizing an on-line control unit. Yaron Paz 10:30 COFFEE BREAK 11:00 11:00 11:20 Session 5A Photocatalytic membranes, thin films Chairwoman/Chairman: M. Jose López Muñoz /Teruhisa Ohno OC-33 Modification of titanium dioxide photocatalytic film electrodes with carbon nanomaterials. Alejandro Ansón-Casaos OC-34 Enhanced photoelectrochemical activity of titanium dioxide anodes prepared by plasma electrolytic oxidation. Silvia Franz Session 5B Water treatment iron processes Chairman/Chairwoman: Ricardo Torres/Ana M. Amat OC-39 The double role of humic-like substances HLS in the degradation of scarcely soluble pollutants by photo-fenton at ph 5. Antonio Arques OC-40 Action spectra of photocatalytic and photo- Fenton processes for chemical oxidation and bacterial inactivation. Javier Marugan

16 Hour 11:40 12:00 12:20 12:40 OC-35 Hematite and hematite/tio2 nanostructured photoanodes for energy and environmental applications. Josef Krysa OC-36 Preparation of photocatalytic thin films with composition dependent wetting properties. László Janovák OC-37 Titania-silica photocatalytic films for air treatment: new insides on the mechanical stability of the composites. Natasa Novak Tusar OC-38 Solar photocatalytic degradation of PVC film with Fe-doped ZnO nanoparticles having different dopant concentrations. Sampa Chakrabarti WEDNESDAY June 6 th OC-41 Iron alginate beads for efficient pharmaceutical removal using heterogeneous solar photo-fenton like process. Carla Sirtori OC-42 Improving bacterial inactivation through enhancement of the solar photo-fenton process with natural organic acids at near-neutral ph. Giannakis Stefanos OC-43 Photocatalytic reduction of Cr VI on hematite nanoparticles in the presence of oxalic and citric acids under UV and visible light. Marta Litter 13:00 LUNCH 14:30 14:30 14:50 15:10 15:30 15:50 Session 6A Novel materials for photochemistry and photocatalysis No TiO2 Chairman/Chairwoman: László Janovák/Marta Litter OC-44 Manganese-based CO2 reduction catalysts bearing naphthalenediimide radical anion superreductants. Alessandro Sinopoli OC-45 Synthesis of layered double hydroxides for photocatalytic and environmental applications. Fiderman Machuca-Martinez OC-46 Novel photocatalytic applications of halide perovskites. Harun Tüysüz OC-47 Photosensitive Ag-containing ZnO/CeO2 Composites with non-stoichiometric matrix. Oksana Gorban Session 6B Water treatment sulfate processes Chairmen: Antonio Arques/Giuseppe Marcì OC-48 Degradation of atrazine in aqueous solution by PS/UV combined with a pre-treatment using zero-valent copper. Cátia Graça OC-49 Degradation of ciprofloxacin by PS/UV-C, PS/ZVA and PS/UV-C/ZVA processes: performance in real surface water and effects on toxicity. Tugba Olmez OC-50 Enhancing solar disinfection by SO4 -: Differences in bacterial inactivation mechanism with S2O8 2- vs. HSO5 - as precursors Jorge Rodríguez Chueca OC-51 Photodegradation of amoxicillin by UV, UV/H2O2 and UV/PS: Reaction kinetics, degradation pathways and antibacterial activity. Yiqing Zhang Short Oral Communications Session 2 Chairwomen: Alessandra Bianco Prevot/Camila Costa de Amorim SOC-13-P13 Cost-effective solar collector to promote photo-fenton reactions: case study on tertiary treatment of urban mature leachate. Ana Isabel Gomes SOC-14-P14 Influence of operating parameters on the single pass removal efficiency during the photocatalytic degradation of acrylonitrile. Henrietta Essie Whyte

17 Hour WEDNESDAY June 6 th SOC-15-P15 Elimination of contaminants of emerging concern by solar photoelectro-fenton process at pilot plant scale. Irene Salmerón García SOC-16-P16 Evaluation of the effect of photocatalytic ozonation with TiO2, heterogeneous catalytic ozonation and photocatalysis in the degradation of pollutants emerging using a flotation cell. Jose Antonio Lara Ramos SOC-17-P17 Use of UVA-LED in the elimination of organics in water by different advanced oxidation processes. Manuel Figueredo Fernández SOC-18-P18 Effect of ionic environment on UVA-LED/TiO2 photocatalysis of Azo Dye solution. Marek Smolný SOC-19-P19 Assessment of different reactor configurations for a diphenhydramine removal by UV-A LED photo-fenton process. Núria López Vinent SOC-20-P20 Humic-like substances isolated from olive mill wates as iron complexating agents in solar-driven processes for pollutans removal. Sara García Ballesteros SOC-21-P21 Iron oxide as promoter of antibiotic activity elimination of waters contaminated with enrofloxacin: semiconductor photocatalysis and heterogeneous Fenton reaction. Sindy Dayana Jojoa Sierra SOC-22-P22 Petroleum refinery wastewater treatment by photo-fenton and photo-catalysis under solar light irradiation. Hande Demir Duz SOC-23-P23 Improving sulfate radical generation using Fe III complexes for water and soil washing effluent treatments. Tao Yufang SOC-24-P24 The effect of oil sands process water inorganic matrix on the photodegradation of organic contaminants. Rui Qin 17:00 COFFE BREAK 17:30 Poster Session P86 to P172 and SOC-Poster 13 to 24 ISC Meeting 18:30 Free Time 20:00 GALA DINNER Oasys Minihollywood

18 Hour THURSDAY June 7 th 09:10 09:50 Plenary Lecture 4 Chairwomen: Chantal Gillard/Miray Bekbölet Solar water disinfection: The journey from the laboratory to the field and back again. Kevin McGuigan Session 7 Water disinfection Chairwomen: Chantal Guillard/Miray Bekbölet 09:50 OC-52 Challenges for the application of TiO2 in solar assisted disinfection of water. Cesar Pulgarín 10:10 OC-53 Quasi-instantaneous photocatalytic bacterial inactivation on nano-structured 2D/3D surfaces: femto-second lived intermediates and cell wall damage. Sami Rtimi 10:30 COFFEE BREAK 11:00 11:00 11:20 11:40 12:00 12:20 12:40 Session 8A Modelling and mechanistic studies in photochemistry and photocatalysis Chairmen: Gianluca Li Puma/Giovanni Camera-Roda OC-54 A BRDF-based Monte Carlo model of light transport for fixed-bed photocatalytic reactor simulation and design. Bruno Ramos OC-55 Photocatalytic NOx removal: rigorous kinetic modelling and ISO standard reactor simulation. Cintia Casado Merino OC-56 Decoupling adsorption and photoactivity in hybrids rgo/tio2 Claudio Minero OC-57 Toward a generalized, simplified, first principles model for photo-fenton process based degradation of harmful contaminants CECs. Francesca Audino OC-58 Thermo-photo-catalysis: kinetic modelling of 2-propanol using a composite ceria-titania sample. Marcos Fernández García OC-59 Advances in mathematical modelling and optimization for applications on solar photocatalysis at Colombia. Miguel Angel Mueses 13:00 LUNCH Session 8B Green synthesis by photochemistry and photocatalysis Chairman/Chairwoman: Jaime Gimenez/M. Luisa Marin OC-60 Photocatalytic production of hydrogen from binary mixtures of C3 alcohols on Pt/TiO2: influence of alcohol structure. Alberto Marinas OC-61 Towards sustainable chemical synthesis by combining metal-free photocatalysts with energy-efficient light sources. Claudia Gomes Silva OC-62 Photocatalytic valorisation of waste water associated with fermentation processes. Chantal Guillard OC-63 HMF selective photo-oxidation in aqueous suspension of both bare and H2O2 treated carbon nitride carried out in a solar pilot plant. Giuseppe Marcì OC-64 Ring hydrogenation of aromatic compounds in aqueous suspensions of Rh-loaded TiO2 photocatalyst without use of H2 gas. Hiroshi Kominami OC-65 Design of photoactive polymer colloids for singlet oxygen production: application to fine chemical synthesis. Sylvie Lacombe

19 Hour 14:30 14:30 14:50 15:10 15:30 15:50 Session 9A Novel materials for photochemistry and photocatalysis increasing photosensitivity Chairman/Chairwoman: Marcos Fernández/Aracely Hernández OC-66 Stability of vis-active photocatalysts based on CZTS/TiO2 heterostructures. Cristina Bogatu OC-67 3D printed floating photocatalysts for wastewater treatment. A preliminary study for the oil pollutants removal Maria Jose Martin de Vidales OC-68 Conduction band engineering in semiconducting oxides: Applications in perovskite photovoltaics and beyond Ladislav Kavan OC-69 Modification of photocalyst morphology by ball-milling and its impact on the physicochemical properties of wet coated layers Petr Dzik OC-70 LAST MINUTE double shell nanoparticles loaded on rutile TiO2 nanorod for decomposition of pollutions under visible light Teruhisa Ohno THURSDAY June 7 th Session 9B Water treatment other photocatalysts Chairman/Chairwoman: Luigi Rizzo /Natasa Novak Tusar OC-71 Optimizing the synthesis method of TiO2-rGO composites to improve photocatalytic degradation of pesticides. Ana Bahamonde OC-72 Photocatalytic water purification using anatase-tio2 supported on activated carbons Almudena Gomez-Aviles OC-73 Degradation of cloxacillin by sonophotocatalysis and its former processes in water: effect of ph and analysis of the degradation extent Ricardo Torres-Palma OC-74 Glyphosate breakdown by photocatalysis: reaction intermediates, mechanism and ecotoxicity Patricia García-muñoz OC-75 Self-sensitized photocatalytic degradation of colorless organic pollutants forming surface Ti IV complexes Wojciech Macyk 16:30 COFFEE BREAK 17:00 Short Oral Communications Session 3 Chairmen: Kevin McGuigan/Tony Byrne SOC-25-P25 The feasibility of the continuous flow operation to disinfect WWTP secondary effluents at neutral ph by solar photo-fenton in raceway pond reactors Irene de la Obra Jimenez SOC-26-P26 How industrial contamination can influence secondary effluent disinfection by UV/H2O2 Jacqueline Aparecida Malvestiti SOC-27-P27 Disinfection of seawater by UV-activated persulfate: performance and effects derived from different aqueous matrices Javier Moreno-Andrés SOC-28-P28 Inactivation of E. coli and E. faecalis by sulphate radicals under natural sunlight in a solar compound parabolic collector reactor Leonor Caldeira Ferreira SOC-29-P29 Total inactivation of indigenous cefotaxime resistant E. coli in secondary effluents from several UWWTPs by solar photo-fenton process in raceway pond reactors Ana Lorenzo SOC-30-P30 Singlet oxygen - A potential disinfectant agent Magdalena Foszpańczyk

20 Hour THURSDAY June 7 th SOC-31-P31 Selective photocatalytic oxidation of 5-Hydroxymethylfurfural to 2,5-furandicarboxaldehyde by polymeric C3N4-H2O2 adduct Marina Ilkaeva SOC-32-P32 Water disinfection and simultaneous removal of contaminants of emerging concern using photocatalytic foams Miguel Martín Somer SOC-33-P33 Coated light panels increasing modularity and surface-to-volume ratio of immobilized photocatalysts for water treatment Nikolai Otto SOC-34-P34 Surface modified titanium dioxide by transition metals: a key role of the reduction potential of the transition metal for activity under solar-light irradiation Andraz Suligoj SOC-35-P35 The degradation of naphthenic acids NAs and formation of chlorinated by-products during UV/chlorine process Abdallatif Abdalrhman SOC-36-P36 Caffeine degradation via UV, UV/H2O2 and UV/S2O8 2- : identification of transformation products Maria Clara Starling 18:00 Poster Session P173 to P261 and SOC-Poster 25 to 36 19:00 Free Time 20:00 FLAMENCO SHOW Plaza del Mar, walking distance to the venue Hour 08:30 09:10 09:10 09:30 FRIDAY June 8 th Plenary Lecture 5 Chairwomen: Valerie Hequet /Sylvie Lacombe Heterogeneous photocatalysis in the gas phase. Nicolas Keller Session 10 Air treatment NOx removal Chairwomen: Valerie Hequet/Sylvie Lacombe OC-76 Micro-TiO2 supporting nano-ag with high photocatalytic visible light activity for air purification Claudia Letizia Bianchi OC-77 Improved nano-dispersion and De-NOx properties of active catalyst by addition of graphene support Bora Ye

21 Hour FRIDAY June 8 th OC-78 09:50 Photocatalytic properties of commercial materials for NOx abatement: current status Silvia Suarez OC-79 10:10 In-situ evaluation of NOx removal efficiency of photocatalytic urban pavements: LIFE-PHOTOSCALING PROJECT Marta Castellote 10:30 COFFEE BREAK 11:00 11:00 11:20 11:40 12:00 12:20 Session 11A Air treatment VOCs Chairman/Chairwoman: Nicolas Keller/Silvia Suarez OC-80 Determination of the Clean Air Delivery Rate CADR of photocatalytic oxidation purifiers using a closed loop reactor Valerie Hequet OC-81 Towards air cleaning: silica supported vanadia for gas phase removal of short chain hydrocarbon mixture Khadija Bnnamshah OC-82 Photocatalytic luminous textile for volatile organic compounds and micropollutants abatement and microorganisms inactivation Lina Lamaa OC-83 TiO2 coated luminous textile: ideal photocatalytic system for pollutant removal from indoor air in vehicle cabin Marwa Hamandi OC-84 Application of composite photocatalysts based on TiO2 active carbon in air treatment Michal Baudys Session 11B Modelling and mechanistic studies in photochemistry and photocatalysis Chairman/Chairwoman: Josef Krysa/Paola Calza OC-85 Photon energy threshold in direct photocatalysis with metal nanoparticles key evidence from action spectrum of the reaction Huaiyong Zhu OC-86 Photocatalytic activity of ZnO nanopowders: the role of production techniques in the structure defects formation Igor Danilenko OC-87 Spectroelectrochemical approach to the estimation of bands position and density of introduced electronic states in doped semiconductors Joanna Kuncewicz OC-88 How slight modifications of TiO2 surface can significantly influence surface states distribution and therefore the photocatalytic activity Marcin Kobielusz OC-89 Structure-activity and -selectivity relation in selfcleaning photocatalytic applications Sammy Verbruggen 13:00 CLOSURE Short Oral and Poster Awards 14:30 Free Time 16:30 20:00 PSA VISIT

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23 Plenary Lectures Photocatalysis for organic synthesis. A convenient perspective or a barren path? Fagnoni, M., Ravelli, D., Protti, S., Albini, A. PhotoGreen Lab, Department of Chemistry, University of Pavia, Italy. PL-01 At the intersect between photochemistry and organic synthesis, in recent years photocatalysis emerged as one of the most powerful approaches to the construction and to the functionalization of complex molecules. The present interest for the development of sustainable chemical protocols and the significant goals reached encourages to pursue the research in this field. Indeed, photocatalytic methods in many ways outperform traditional approaches, provided that appropriate conditions are applied. Defective graphenes from biomass wastes as photocatalysts for solar fuels PL-02 production. García, H. Instituto de Tecnología Química CSIC-UPV, Universitat Politécnica de Valencia, Valencia, Spain. While most of the photocatalysts are based on metals, for the sake of sustainability there is an interest in developing photocatalysts based mainly on carbon and derived from biomass. Our groups have been working on the preparation of defective graphenes from biomass wastes. These 2D materials may contain metal nanoparticles strongly grafted on the graphene. The resulting defective graphenes exhibit a remarkable photocatalytic activity for the overall solar light water splitting and for the selective photoassisted CO2 methanation Environmental and economic impact of photocatalysis: an approach PL-03 Giménez, J. Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, Universitat de Barcelona, C/ Martí i Franqués 1, Barcelona, Spain. address: AOPs can be useful for the pollutants treatment. However, AOPs have a cost and, in turn, generate an environmental impact. To evaluate the cost, two aspects are considered: the cost associated with facilities, equipment and instruments, including their amortization, and operating costs that include personnel, maintenance, electricity, materials and services. On the other hand, the environmental impact of any AOP can be assessed through various methodologies such as LCA, environmental risk analysis according to Directive 2004/35/EC or using indexes related to the consumption of raw materials and energy, the generation of pollutants and the dangerousness and amount of the compounds handled. 1

24 Solar water disinfection: the journey from the laboratory to the field and back again. McGuigan, K.G. Dept. of Physiology and Medical Physics, Royal College of Surgeons in Ireland RCSI, Dublin, Ireland address: PL-04 Solar water disinfection SODIS has been known for more than 30 years. The technique consists of placing water into transparent plastic or glass containers normally 2 L PET beverage bottles which are then exposed to the sun. Exposure times vary from 6 to 48 h depending on the intensity of sunlight and sensitivity of the pathogens. Its germicidal effect is based on the combined effect of thermal heating of solar light and UV radiation. It has been repeatedly shown to be effective for eliminating microbial pathogens and reduce diarrhoeal morbidity including cholera. Since 1980 much research has been carried out to investigate the mechanisms of solar radiation induced cell death in water and possible enhancement technologies to make it faster and safer. In this presentation Kevin McGuigan will give you a guided tour of the journey that SODIS has taken since his initial involvement in the mid 1990s, through the field trials in Africa and Asia, and will highlight the many challenges both scientific and social that remain for this point-of-use household water treatment. Heterogeneous photocatalysis in the gas phase. PL-05 Keller, N. Institut de Chimie et Procédés pour l'energie, l'environnement et la Santé ICPEES, CNRS/University of Strasbourg, Strasbourg, France. The aim of this talk is to give an overview of current challenges in gas phase heterogeneous photocatalysis by focussing on selected examples from different application fields. The talk will highlight how the engineering of photocatalytic materials, from powdery solids to photocatalytic media, can positively impact on the different basic steps of gas phase processes whatever the applications. 2

25 Oral Communications SESSION 1 PHOTOCATALYTIC, PHOTOCHEMICAL AND PHOTOSYNTHETIC SYSTEMS FOR H2 PRODUCTION AND CO2 UTILIZATION Harvesting solar energy for CO2 catalysis in a plasmonic microreactor. Influence of the thermodynamic conditions OC-01 Muñoz, S. 1, Navarrete, A. 2, Grzelczak, M. 3, Sanchez-Iglesias, A. 3, Martín, A. 1, Cocero, M.J. 1, Dittmeyer, R. 2 1 High Pressure Processes Group, University of Valladolid, Valladolid, Spain. 2 Institute for Micro Process Engineering, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany. 3 CIC biomagune, Donostia-San Sebastián, Spain. Exciting advances are being made in the development of efficient photocatalytic catalytic materials for CO2 conversion. In order to extract their full potential, it is required to efficiently collect and transport the solar energy and the reactants to the catalyst. Thus, novel reaction devices are needed that provide robustness, scalability and flexible design. We have recently developed a concept for a plasmonic microreactor for CO2 activation. The reactor is based on abundant materials and is capable of handling a wide range of pressures. Even beyond the supercritical state of CO2 benefitial for Reversible Water Gas Shift reaction RWGS. Here we are going to present the most-recent results obtained at pressures up to 120 bar using two different plasmonic composites. Modified g-c3n4 with improved enhanced charge separation for efficient visible-light photocatalytic H2 production OC-02 Da Silva, E. 1, Moura, NMM. 2, Coutinho, A. 3,4, Silva, CG. 1, Neves, MGPMS 2, Prieto, M. 3, Faria, J.L. 1 1 LSRE-LCM, Associate Laboratory, Faculdade de Engenharia da Universidade Porto, Portugal 2 QOPNA, Universidade Aveiro, 3 CQFM-IN and IBB,Universidade Lisboa 4 Departamento de Química e Bioquímica; Universidade Lisboa, Portugal. In this work we report a straightforward route towards the synthesis of graphitic carbon nitride, g-c3n4, modified with porous designed CNm by copolymerization of -cyclodextrin and dicyandiamide aiming to improve the photocatalytic performance of bulk graphitic carbon nitride designed as CN. The as prepared CNm material efficiently enhances the separation and mobility of the photogenerated charge carriers and extends the absorption into the visible region up to 720 nm. Compared to bulk CN, our material exhibited about 5 times higher H2 generation from photocatalytic water splitting under visible light. This works provides a useful strategy to design and fabricate highly efficient graphitic carbon nitride photocatalyst with improved textural and changed electronic properties. 3

26 Exploring crude glycerol as feedstock in the development of a realistic hydrogen production process OC-03 Ribao, P. 1, Esteves, M.A. 2, Fernandes, V.R. 2, Rivero, M.J. 1, Rangel, C.M. 2, Ortiz, I. 1 1 Department of Chemical and Biomolecular Engineering, University of Cantabria, Santander, Spain. 2 LNEG, National Laboratory for Energy and Geology, Lisbon, Portugal. Hydrogen is widely considered as a very promising clean energy carrier and therefore much effort is being invested in the development of sustainable technologies capable of producing hydrogen from renewable sources. In this way, photocatalysis reports great interest due to its ability to integrate hydrogen generation and wastewater treatment. The novelty of this work is to gain insight on the use of waste glycerol as sacrificial agent to generate hydrogen employing TiO2-rGO-Pt photocatalysts; with this purpose a comparative analysis has been done in the process performance using synthetic and crude glycerol batches. The results showed a hydrogen generation rate 5.5 times higher using synthetic glycerol 20 vol. % than using crude glycerol 1 vol. %. Moreover, different optimal conditions glycerol and catalyst were found depending on the origin of glycerol. Therefore, it can be assumed that impurities present in crude glycerol are key factors in the deployment of hydrogen production processes using waste materials. Selective photoreduction of CO2 to CH4 over Pt/TiO2 photocatalysts supported on mesoporous silica OC-04 Tasbihi, M. 1*, Fresno, F. 2*, Simon, U. 3, Villar-García, I.J. 4, Pérez-Dieste, V. 4, Escudero, C. 4, de la Peña O Shea, V.A. 2, Schomäcker, R. 1 1 Department of Chemistry, Technical University of Berlin, Straße des 17.Juni 124, Berlin, Germany. 2 Photoactivated Processes Unit, IMDEA Energy Institute, Parque Tecnológico de Móstoles, Avda. Ramón de la Sagra 3, Móstoles, Madrid, Spain. 3 Institute for Material Science and Technologies, Technische Universität Berlin, Englische Str. 20, D Berlin, Germany. 4 ALBA Synchrotron Light Source, Carrer de la Llum 2 26, Cerdanyola del Vallès, Barcelona, Spain. Photocatalytic reduction of CO2 was performed by using different Pt/TiO2 and Pt/TiO2-COK wt.% under UV light in a continuous flow gas-phase photoreactor. The photocatalysts were prepared by deposition-precipitation method and were characterized in detail with various techniques. H2, CH4 and CO are detected as major products with all photocatalysts, with minor amounts of CH3OH. CO is the main product obtained over TiO2 regardless of the presence of the COK-12 as a mesoporous support, whereas Pt leads to CO2 reduction towards CH4 formation, with a selectivity that reaches ca. 100 % with optimum loading. Supporting the Pt/TiO2 catalysts on COK-12 keeps the CH4 selectivity and further improves the light harvesting properties of the Pt/TiO2 materials. After-reaction ATR-IR and in-situ NAP-XPS spectroscopies have been employed to study the reasons of the observed selectivity. 4

27 SESSION 2A PHOTOCATALYTIC, PHOTOCHEMICAL AND PHOTOSYNTHETIC SYSTEMS FOR H2 PRODUCTION AND CO2 UTILIZATION Pd-Pt bimetallic Nb-doped TiO2 for H2 photo-production: gas and liquid phase processes OC-05 Caudillo-Flores, U., Muñoz-Batista, M.J., Kubacka, A., Fernández-García, M. Instituto de Catálisis y Petroleoquímica, CSIC, Madrid, Spain. In this work we compare the performance of different atomic ratios of a Pt-Pd co-catalyst supported on Nb-doped TiO2 materials for hydrogen photo-generation using methanol as sacrificial agent. The physico-chemical properties were characterized by a multitechnique examination of the catalysts and their photocatalytic performance assessed through the analysis of the optical properties, the measurement of the reaction rates and subsequent computation of the true quantum efficiency in liquid and gas phase reactors. The results displayed that the Nb doped-tio2 co-catalyzed with Pt-Pd bimetallic alloys shows enhanced H2 production with respect to the monometallic materials with Pt and Pd. The C-containing products analysis in liquid and gas phase showed that the pathway for H2 photo-production is different. Photocatalysts based on Cd1-xZnxS with nickel cocatalysts for H2 production and CO2 reduction under visible light OC-06 Kozlova, E.A. 1,2, Markovskaya, D.V. 1,2, Lyulyukin, M.N. 1,2, Parmon, V.N. 1,2 1 Boreskov Institute of Catalysis, Novosibirsk, Russian Federation. 2 Novosibirsk State University, Novosibirsk, Russian Federation. The Cd0.3Zn0.7S samples modified with NiS via doping the bulk and supporting on the surface, as well as the Ni OH 2/Cd0.3Zn0.7S are prepared. The activity of synthesized photocatalysts was tested in the photocatalytic hydrogen production from Na2S/Na2SO3 aqueous solutions under visible light irradiation 450 nm. In spite of the different structure and optical properties, Ni modification leads to the formation of highly active photocatalysts. The highest photocatalytic activity values was and 9.1 mmol H2 g -1 h -1 for the 0.3 wt% NiS/Cd0.3Zn0.7S photocatalyst; this value exceeds the literature data. Unfortunately, Ni-modified Cd0.3Zn0.7S photocatalysts turn out to be unsuitable for carbon dioxide reduction. 5

28 Mesoporous 3D structure based TiO2 photocatalyst for environmental applications OC-07 Ghazzal, M.N. 1, Gesesse, G.D. 1, Li C. 1, Habbibi, Y. 2, Schanne-Klein, M.C. 3, Paineau, E. 4, Wojcieszak, R. 5, Remita, H. 1, Colbeau- Justin, C. 1 1 Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris-Sud, Université Paris-Saclay Orsay, France 2 Materials Research and Technology MRT, Luxembourg Institute of Science and Technology LIST, Belval Innovation Campus,5, avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg 3 Laboratoire d optique et bioscience, UMR 7645/Ecole polytechnique/isserm/ensta, Palaiseau 4 Laboratoire de Physique du Solide, UMR 8502 CNRS, Université Paris-Sud, Université Paris-Saclay Orsay, France 5 Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 UCCS Unité de Catalyse et Chimie du Solide, F Lille, FranceFrance We will present a TiO2 photocatalyst with a promising characteristic for tuning the reflection of electromagnetic radiation and light harvesting in order to improve its photoefficiency. The synthesis process enabled the elaboration of a mesoporous structure with a 3D architecture based on titanium dioxide. The material was characterized by means of different techniques, such as BET, WAXS, polarised optical microscopy, UV-Visible spectroscopy, TEM and Time Resolved Microwave Conductivity TRMC. TRMC results show an improvement of the charge carrier density produced under illumination at the photocatalyst surface. The 3D architecture improves the kinetic of the photocatalytic degradation of the phenol. Highly active Ru/TiO2 nanomaterials for photocatalytic hydrogen production OC-08 Ouyang, W. 1, Muñoz-Batista, M.J. 1, Fernandez-Garcia, M. 2, Luque, R 1 1 Departamento de Química Orgánica, Universidad de Córdoba, Edif. Marie Curie, Ctra Nnal IV-A, Km 396, E14014, Córdoba, Spain. s: 2 Instituto de Catálisis y Petroleoquímica, CSIC, Marie Curie 2, Madrid, Spain. TiO2 decorated with Ru nanoparticles was synthesized by reversed micro-emulsion method, following by wet impregnation incorporation. The materials were fully characterized by various techniques, including XRD, UV-Vis spectroscopy, N2 physisorption, SEM and TEM. Subsequently, the as-synthesized materials were applied in the photocatalytic H2 production. Systematic simulation was carried out to obtain the quantum efficiency. It is found that presence of Ru can promote catalytic performance of the material via plasmonic effect and TiO2 with appropriate Ru loading 3% gives the optimal reaction rate and quantum efficiency. 6

29 Photocatalytic H2 production over crystalline ZnO nanowires from ethanol aq in vapor phase OC-09 Sola, A.C. 1, Ramírez de la Piscina, P. 1, Alcobé, X. 2, Martínez-Alanis, P.R. 3, Güell, F. 3, Homs, N. 1,4 1 Dept. Química Inorgànica i Orgànica, secc. Química Inorgànica, and Institut de Nanociència i Nanotecnologia IN2UB, Universitat de Barcelona UB, Barcelona, Spain. 2 Centres Científico Tècnics UB, Barcelona, Spain. 3 Dept. Enginyeries, secc. Electrònica, UB and IN2UB, Barcelona, Spain. 4 Catalonia Institute for Energy Research IREC, Barcelona, Spain. H2 evolution from ethanol aq vapor under h irradiation over ZnO nanowires. In the present work we report the study of ZnO nanowires ZnO NWs in the photocatalytic H2 evolution from ethanol aq in vapor phase. ZnO NWs were grown, using a catalyst-free vapor-solid process, on a ZnO thin film prepared by deposition. The structural and optical properties of ZnO NWs are analyzed using XRD, HRTEM and, XP, Raman and PL spectroscopy. The photocatalytic process was followed by insitu diffuse reflectance infrared spectroscopy DRIFTS coupled to on-line mass spectrometry MS analysis. We propose several processes that could take place over ZnO NWs during the irradiation of an ethanol/water flow at room temperature. Advanced photothermal activity of noble metal-free nanoparticles for hydrogen production by glycerol reforming OC-10 Nikitenko, S.I., Chave, T., Le Goff, X. ICSM, CEA-CNRS-UM-ENSCM, Centre de Marcoule, Bat. 426, BP 17171, Bagnols sur Cèze, Cedex, France. We found that noble metal-free core-shell nanoparticles exhibit much higher photocatalytic activity in H2 production from aqueous solutions of glycerol 40% vol. compared to pristine anatase TiO2 or air-passivated Ti NPs. In addition, NPs show strong photothermal effect providing efficient H2 production under the joint effect of light and heat. The apparent activation energy Ea 27 2 kj mol -1 assumes that the thermal effect is governed by diffusion of the intermediates rather than by thermal activation of the chemical bonds. Under dark conditions, formation of H2 is not observed even at 100 C. The driving force of the studied process consists of the Ti core interband transition excitation followed by nonradiative Landau damping and e Ti/ h TiO2 charge separation. 7

30 SESSION 2B WATER TREATMENT TIO2 Magnetic nanoparticles for photocatalytic ozonation of organic pollutants OC-11 Orge, C.A., Soares, O.S.G.P., Ramalho, P.S.F., Faria, J. L., Pereira, M. F. R. Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, LSRE-LCM, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto, Portugal. C/C P25 FeO t/min Fig. 1: Evolution of OMA concentration by photocatalytic ozonation in the presence of selected catalysts C0 1 mm A strategy to approach the catalysts recovery issue in water treatment processes using slurry systems is the use of magnetic materials. In this work several magnetic nanoparticles, FeO and FeO coated with carbon produced by chemical vapour decoposition CVD, were tested in the photocatalytic ozonation of oxamic acid OMA, a strong organic acid, which can be dangerous on prolonged contact with skin, or by ingestion of high doses. The introduction of carbon in FeO particles significantly increases their photocatalytic activity for the conversion of OMA. The prepared carbon based magnetic materials presented similar performance to P25, specially the sample treated at 850 ºC, with the advantage of the magnetic property. Degradation of emerging organic pollutants in wastewater effluents by electrochemical photocatalysis on nanostructured TiO2 meshes OC-12 Murgolo, S. 1, Franz, S. 2, Falletta, E. 3, Arab, H. 2, Bestetti, M. 2, Mascolo, G. 1 1 CNR-IRSA, Bari Italy. 2 Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering, G.Natta, Milano Italy 3 Università di Milano, Dipartimento di Chimica, Milano Italy. A new electrochemical photocatalytic process based on the employment of a photoactive coating grown directly on titanium wire meshes was successfully exploited for the degradation of carbamazepine in real secondary wastewater effluent. The catalyst was prepared by Plasma Electrolytic Oxidation and during the photocatalytic water treatment an electrical polarization was applied to the catalyst. Results showed that carbamazepine degradation rate follows the order UV/TiO2 bias UV UV/TiO2 in both synthetic water and real secondary wastewater effluent. The reaction in the wastewater effluent was slower down, as expected, than in the synthetic water matrix. The new process was compared with the conventional one employing suspended TiO2 powder showing similar degradation rate. The investigation also included the identification of the degradation products. 8

31 Assessment of the influence of water matrix on the photocatalytic oxidation of atrazine in TiO2 and ZVI systems OC-13 López-Muñoz, M.J. 1, Plaza, J. 1, Raez, J.M. 1, Sánchez Pérez, J.A. 2,3, Arencibia, A. 1 1 Environmental and Chemical Engineering Group, Universidad Rey Juan Carlos, Móstoles, Spain. 2 Departament of Chemical Engineering, Universidad de Almería, Almería, Spain. 3 CIESOL, Joint Centre of the University of Almería-CIEMAT Almería, Spain. The oxidative elimination of atrazine in aqueous systems has been investigated by using zero valent iron nanoparticles n-zvi and TiO2 heterogeneous photocatalysis, under artificial UV and solar light irradiation. Main atrazine metabolites were analyzed in each system. The influence of the aqueous matrix on the photocatalytic oxidation kinetics was assessed in deionized water, tap water, simulated secondary WWTP effluent sim-sew and secondary effluent taken from a wastewater treatment plant SEW, spiked with atrazine. To examine the impact of the main background constituents of SEW photocatalyzed oxidation of the pesticide was performed in deionized water solutions containing similar initial concentrations of inorganic ions nitrites, sulphates, and carbonates and dissolved organic matter DOM. Photonic and quantum efficiencies in a new UV-LED photocatalytic reactor OC-14 Manassero, A., Negro, A.C., Satuf, M.L., Alfano, O.M. Instituto de Desarrollo Tecnológico para la Industria Química, Santa Fe, Argentina. The efficiency of an annular, fixed-bed reactor for the photocatalytic degradation of the pharmaceutical clofibric acid CA in water was assessed. The annulus of the reactor was filled with TiO2-coated glass rings and irradiated internally and externally with ultraviolet light emitting diodes UV-LEDs. The influence of the initial CA concentration and of different irradiation conditions was evaluated. The results demonstrated the feasibility of this reactor to degrade the pharmaceutical. The performance of the reactor was evaluated by means of two parameters: i the photonic efficiency ηph and ii the quantum efficiency ηqu. The best efficiencies were obtained by using the highest initial concentration of CA and the lowest incident radiation condition. 9

32 Photocatalytic degradation of pesticide under visible light irradiation using CaxMnOy-TiO2 composites OC-15 Sharma, P.K. 1, Bougarrani, S. 2, Hamilton, J.W.J: 1, Bouziani, A. 2, El Azzouzi, M. 2, Byrne, J.A. 1 1 Nanotechnology and Integrated BioEngineering Centre NIBEC, University of Ulster, Shore Road, Newtownabbey, BT37 0QB, United Kingdom. 2 Laboratory of Molécular Spectroscopy- CERNE2D, Department of Chemistry, University of Rabat, BP 1014, Agdal, Rabat, Morocco. Semiconductor photocatalysis is effective for the degradation of a wide range of pollutants found in the environment. In an attempt to enhance the solar photocatalytic efficiency, TiO2 Hombikat UV100 was modified with CaxMnOy. The powder samples were utilised as an aqueous suspension in a stirred tank photocatalytic reactor for the degradation of imazapyr, a herbicide from imidazolinone family. The photocatalytic degradation rate for the degradation of imazapyr with UV100 under UV-Vis irradiation was enhanced by 37% following CaxMnOy modification. CaxMnOy- UV100 also demonstrated some visible light activity towards imazapyr degradation. The effect of metal dopants on solar photocatalysis efficiency and phase transitions of titania OC-16 Byrne, C. 1,2, Hermosilla, D. 3, Merayo, N. 4, Dervin, S. 1,2, Moran, L. 5, Blanco, A. 4, Hinder, S. 6, and Pillai, S.C. 1,2 1 Nanotechnology and Bio-engineering Research Group, Institute of Technology Sligo, Sligo, Ireland. 2 Centre for Precision Engineering, Materials, and Manufacturing Research PEM, Institute of Technology Sligo, Sligo, Ireland. 3 University of Valladolid, EIFAB, Campus Duques de Soria, Soria, Spain. 4 Complutense University of Madrid, FCC Químicas, Ciudad Universitaria s/n, Madrid, Spain. 5 Department of Life Sciences, Institute of Technology Sligo, Sligo, Ireland. 6 The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom. Titania is an efficient solar photocatalyst used in many environmental applications when it is formed in anatase phase. Anatase is, in general, irreversibly transformed into less photocatalytically active rutile at temperatures ºC. This transition limits its use, for example, in the preparation of building materials. In the current investigation, different metal dopants Cu, Au, & W have been introduced into titania lattice to increase this transition temperature, and their solar photocatalytic efficiency has been tested in the treatment of a highly toxic industrial pollutant 1,4-dioxane. Among the three, W-titania particularly showed higher transition temperature and treatment efficiency. 10

33 SESSION 3A PHOTOCATALYTIC HYBRID SYSTEMS TiO2/Carbon nanohybrids for photocatalytic degradation of organic compounds in water OC-17 Kuvarega, A.T., Mukonza S.S., Ntsendwana, B. Nanotechnology and Water Sustainability Research Unit, University of South Africa, Florida Campus, South Africa. The discovery of enhanced properties in nanomaterials has stimulated an avalanche of research activities aimed at harnessing these materials for solving global environmental challenges. Nanocomposite materials fabricated from TiO2 and different carbon allotropes C have gained popularity in water treatment applications due to the synergistic properties of the TiO2 and the carbon materials. Besides acting as high surface area supports for photocatalytic nanoparticles, carbon materials can also modify the physico-chemical properties of the hybrid photocatalysts for enhanced adsorption and photoactivity. Coupling photodegradation/adsorption properties of AC-TiO2 composite materials OC-18 Telegang Chekem, C. 1,2, Goetz, V. 1, Plantard, G. 1, Richardson, Y. 2, Blin, J. 2 1 PROMES-CNRS UPR 8521, PROcess Material and Solar Energy, Rambla de la Thermodynamique Perpignan, France. 2 Biomass Energy and Biofuels Laboratory LBEB, International Institute for Water and Environmental Engineering 2iE Foundation, 01 BP 594, Ouagadougou 01, Burkina Faso. AC-TiO2 catalysts were obtained after a straightforward coating of a homemade AC with titania nanoparticles TiO2-NPs. Physicochemical characterization of the composite catalysts depicts the presence of TiO2-NPs exhibited at the external macroporosity of the composite materials. A new mathematical approach is set out to comprehensively take into account the kinetics of both adsorption and degradation on TiO2 photocatalytic centers. The simulated kinetic breakthroughs match with the experimental profiles, suggesting the actual application of the model to describe adsorption/photodegradation dual mechanism driven on the composite catalyst. 11

34 Photocatalysis with nanoporous carbon materials OC-19 Gomis-Berenguer, A. 1, Ania, C. 1,2 1 POR2E Group, CEMHTI CNRS UPR Univ. Orleans, France. 2 Instituto Nacional del Carbon INCAR, CSIC, Oviedo, Spain. HO H 2 O chromophores e - e - h + e - h + nanoconfinement e - pollutant h + CO 2 + H 2 O e - e - e - h + e - e - e - e - H 2 O HO H 2 O 2 O 2 O 2 HO 2 HO The interest in the use of carbon materials as photocatalytic applications has grown over recent decades. Since the early studies reporting the role of nanoporous carbons as inert supports of semiconductors, many researchers have investigated the key role of carbon matrices coupled to all types of photoactive materials. More recently, our group has demonstrated the ability of semiconductor-free nanoporous carbons to convert the absorbed photons into chemical reactions, opening new opportunities in environmental photocatalysis based on carbon materials. The aim of this contribution is to review the progress on the application of nanoporous carbons in photochemistry, covering their role as additives to semiconductors as well as photocatalysts in environmental remediation. Sunlight photoactivity of rice husks-derived biogenic silica OC-20 Fernández de Cordoba, M.C, 1,2 Matos J., 1 Ania C. 2 1 Hybrid and Carbon Materials Group, Bioenergy Department, Technological Development Unit, Univ. of Concepción, Chile. 2 POR2E Group, CEMHTI CNRS UPR3079, Univ. Orleans, Orleans, France. Hybrid materials were prepared by the solvothermal treatment of rice husk RH as biogenic precursor in the presence and absence of TiO2. The efficiency of the bare RH-Si and hybrid photocatalysts RH- Si-Ti was evaluated in the degradation of rhodamine-b under simulated solar light. Data showed that the prepared catalysts displayed a well-developed mesoporous texture with non-negligible surface areas ranging from 65 to 175 m 2 /g. The calcination at 350 ºC improved the photocatalytic activity obtained from the biogenic precursor by three times in the absence of TiO2. At converse, RH-Si- Ti photocatalyst showed 8 times higher photoactivity than the calcined sample RH-Si-Ti-350 suggesting a strong interaction between SiO2 and TiO2 along calcination. Results were correlated with the surface ph and the SiO2-TiO2 crystalline phases. 12

35 Abatement of recalcitrant pollutants with enzymes and ZnO-based hybrid system OC-21 Calza, P. 1, Paganini, M.C. 1, Mallon, P.E. 2, Laurenti, E. 1 1 Department of Chemistry, Università di Torino, Via P. Giuria 5/7, Torino, Italy 2 University of Stellenbosch, Department of Chemistry and Polymer Science, Stellenbosch, South Africa Enzymes and ZnO based materials were evaluated for their ability to remove a mixture of organic pollutants. These materials were tested in their free form as well as supported on poly styrene-co-maleic anhydride SMA nanofiber mats fabricated though the process of electrospinning. In free form they showed a good removal efficacy of all the contaminants even in a mixed matrix environment which mimics a real scenario. Supporting these materials on nanofiber mats did not compromise on the effectiveness of the materials. By combining soybean peroxidase SBP attached to the SMA nanofibres and oxides nanoparticles into the polymer nanofibres, a synergic effect was observed and it was particularly marked when using Ce-doped ZnO in wastewater matrix. Novel hybrid titania and non-titania photocatalytic systems for photocatalysis under UV, visible and near-infrared irradiation OC-22 Ullah, S., 1 Hazra, C., 1 Ferreira-Neto, E.P., 2 Rodrigues-Filho, U.P., 2 Lima Ribeirao, S.J. 1 1 Institute of Chemistry, State University of Sao Paulo, Araraquara, Brazil. 2 Institute of Chemistry of Sao Carlos, University of Sao Paulo, Sao Carlos, Brazil. The development of novel photocatalysts responsive towards a broad range of electromagnetic radiation is important for effective utilization of solar energy. To extend the application of classic TiO2- based photocatalysis to NIR region, we have coupled TiO2 with upconversion nanoparticles UCPs NaYF4: Yb 3 /Tm 3 to obtain photocatalyst, active both under UV and NIR region. Secondly, we have developed a facile microwave-based method to synthesis BiVO4 photocatalysts with good photoactivity under visible radiation using low-power total power 1.2 W LEDs 460 nm as light source. Thirdly, we have designed nanoparticles consisting of small ~5nm and welldispersed anatase TiO2 crystals with excellent thermal stability 1000 ºC and good photoactivity. 13

36 SESSION 3B WATER TREATMENT PHOTOCHEMICAL PROCESSES Effect of UV light irradiation on the electrochemical oxidation of methyl paraben OC-23 Dionisio, D. 1,2, Saez, C. 1, Motheo, A.J. 2, Cañizares, P. 1, Rodrigo, M.A. 1 1 Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Ciudad Real, Spain. 2 São Carlos Institute of Chemistry, University of São Paulo, São Carlos, Brazil. In this work, the electrochemical oxidation of methyl paraben with diamond electrodes is studied. It was found that this preservative can be easily removed from wastewater, either in sulfate or chloride media. Irradiation by UV light produces a synergistic effect on the process, which could be initially understood in terms of the formation of sulfate and chloride radicals. However, chemical tests with persulfate and hypochlorite point out that these results can be better explained considering the oxidizing effect of ozone and hydrogen peroxide. Those species are produced during the electrolysis on the surface of diamond and, within the reaction conditions undertaken, are unstable and decompose to hydroxyl radicals in the bulk of the working solution. New insights on the photodegradation of caffeine in the presence of bio-based substances; from homogeneous to heterogeneous process OC-24 Palma, 1 Bianco Prevot, 1 Celi, 1 Fabbri, 1 Magnacca, 1 Nisticò, 2, Brigante, 3 Mailhot 3 1 University of Torino, Torino, Italy. 2 Polytechnic of Torino, Torino, Italy. 3 Université Clermont Auvergne, Clermont-Ferrand, France. Waste-derived bio-based substances BBS isolated from urbancomposted biowaste are supramolecular aggregates structurally similar to soil humic substances, showing amphiphilic properties. Moreover BBS can produce reactive species, under UV-vis irradiation, and they have been already tested as photosensitizer for the degradation of several organic substrates, among them caffeine as representative of contaminants of emerging concern. Here we report new insights on BBS performance for caffeine photodegradation in both homogeneous system and as hybrid magnetic nanoparticles in heterogeneous system. The effect of ph, the possibility to recover and re-use the nanoparticles and the assessment of the reaction mechanism have been studied and discussed. 14

37 The role of water composition on the acetaminophen degradation by the UV/HOCl process OC-25 Velo-Gala, I. 1, Farré, M.J. 1, Radjenovic, J. 1,2, Gernjak, W. 1,2 1 Catalan Institute for Water Research ICRA, Girona, Spain. 2 Catalan Institute for Research and Advanced Studies ICREA, Barcelona, Spain. Studies of the UV/HOCl process have increased recently due to its confirmed efficiency for the degradation of microcontaminants. Hydroxyl and chlorine radicals are typically considered as the main oxidant species responsible for the degradation of pollutants in this system. This study investigated the effect of the ph, NOM, bi carbonate, and sulphate anions on UV/HOCl oxidation of acetaminophen. Our results indicate the formation of secondary oxidant species from the UV activation of acetaminophen and the oxidation of the present inorganic ions i.e., sulphate, bi carbonate and chlorine to the corresponding radical species. Regarding the process performance, we propose that the aromatic ketones contained in acetaminophen and its degradation byproducts can form carbonate and sulfate radicals after their interaction with the anions. Removal of contaminants of emerging concern and inactivation of antibiotic resistant bacteria in water by sunlight/peracetic acid OC-26 Rizzo, L. 1, Agovino, T. 1, Nahim-Granados, S. 2, Castro-Alférez, M. 2, Fernandez-Ibanez, P. 3, Polo Lopez, I. 2 1 Department of Civil Engineering, University of Salerno, Fisciano SA, Italy. 2 CIEMAT-Plataforma Solar de Almeria, Almeria, Spain. 3 NIBEC, University of Ulster, UK. Sunlight/peracetic acid PAA process was investigated at pilot scale in the inactivation of antibiotic resistant sulfamethoxazole Escherichia coli SMX-R E. coli, and in the degradation of a mixture of three CECs: Carbamazepine CBZ, Diclofenac DCF and Sulfamethoxazole SMX, at initial concentration of 100 μgl -1 each. The effect of water matrix groundwater GW Vs wastewater WW was also investigated. Each contaminant showed a different degradation rate and CBZ was found to be the most recalcitrant one 56% removal in WW, 10 mg PAA L -1, 300 minutes, QUV 58 kjl -1. A concentration of 10 mg PAA L -1 allowed to completely inactivate SMX-R E.coli initial bacterial density CFU ml -1 as well as to reach a sufficient elimination of SMX, CBZ and DCF in real WW. 15

38 Potential of 9-mesityl-10-methylacridinium Mes-Acr-Me as photocatalysts for the abatement of chlorinated pollutants OC-27 Marin, M.L. 1, Martinez-Haya, R. 1, Martinez-Valero, E. 1, Miranda, M.A. 1 1 Instituto de Tecnología Química, Universitat Politècnica de València-CSIC, Valencia, Spain. Photocatalytic degradation of two highly chlorinated contaminants 2,4,6-Trichlorophenol TCP and pentachlorophenol PCP has been investigated in the presence of 9-Mesityl-10- Methylacridinium Mes-Acr-Me, a photocatalyst able to absorb visible light. Removal of the two pollutants was achieved in 45% and 64%, respectively after nine hours irradiation. Control experiments showed no reaction in darkness or in the absence of the photocatalyst. The pollutants did not produce any decrease in the fluorescence lifetime of Mes-Acr-Me ; nevertheless, the transient absorption spectra obtained upon laser flash photolysis excitation in the absence and in the presence of the pollutants indicated participation of the triplet excited in the electrontransfer process. Solar photolytic ozonation of refractory herbicides in a river water matrix OC-28 Solís, R.R. 1,2, Gimeno, O. 1,2, Rivas, J. 1,2, Beltrán, F.J. 1,2 1 Dpto. Ingeniería Química y Química Física, Universidad de Extremadura, Badajoz, España. 2 Instituto Universitario del Agua, Cambio Climático y Sostenibilidad, Universidad de Extremadura, Badajoz, España. Photolytic ozonation of a mixture of three pyridine herbicides has been conducted in a river water matrix with simulated solar radiation nm. Also, ph and radiation filters and nm have been chosen as the main variables for the study. The presence of radiation enhances the rate of oxidation of the compounds, the difference between the presence and absence of radiation being higher at acidic conditions. The calculated RCT ratios confirm the minimal differences observed at increasing ph, what is due to the ability of hydroxyl anion to decompose O3 into hydroxyl radicals. The mineralization of the photolytic process reached 60%, whatever the ph considered. The increase of ph minimizes the differences in mineralization between the two technologies, being for single ozonation 50% at ph 8. 16

39 SESSION 4 EXPERIMENTAL STANDARDIZATION AND COMMERCIAL APPLICATIONS Industrial wastewater treatment by solar photo-fenton: comparison between photoreactors with solar collectors and raceway pond reactors OC-29 Cabrera, A. 1, Miralles Cuevas, S. 1, Cornejo, L. 1, Rivas, G. 2,3, Sánchez Pérez, J.A. 2,3 1 University School of Mechanical Engineering, University of Tarapacá, Arica, Chile. 2 Chemical Engineering Department, University of Almería, Almería, Spain. 3 CIESOL, University of Almería, Almería, Spain. TC (mg of DOC removed/m 2 min) CPC Wasterwater initial DOC concentration (mg/l) Any industrial application of a photocatalytic process requires a photoreactor, where the rates of photochemical reactions depend on the position in the reaction zone. As the photoreactor presents an important influence on treatment costs, this study compares the treatment of simulated textile industry effluent at different initial dissolved organic carbon concentrations by solar photo-fenton in: i CPC photoreactor ii flat collector FC photoreactor and iii RPR 5 and 15 cm liquid depth. No difference was found between the CPC and FC photoreactors in terms of treatment time while these times were always higher in the RPRs. However, the RPRs treatment capacities mg of DOC removed/m 2 min were significantly higher than those of the FC and CPC photoreactors. Comparison of the performances of an annular photocatalytic reactor with fluorescent lamp and a plane reactor with LEDs OC-30 Camera-Roda, G. 1, Loddo, V. 2, Palmisano, L. 2, Parrino, F. 1 Dep. of Civil, Chem., Environ. and Mat. Eng., University of Bologna, Italy. 2 Schiavello-Grillone Photocatalysis Group, DEIM, Università degli Studi di Palermo, Italy LEDs are becoming a widely used light source even in photocatalytic applications because of their affordable cost, long life and high efficiency in the conversion of electric power into radiant energy. In the present work, a thorough insight on the real advantages and disadvantages of their utilization in photocatalysis both for kinetic analysis and for practical applications is presented. In parallel, the effects of the geometry of the reactor on the overall quantum yield and on the effectiveness of light utilization are analysed. The comparison is based on the measured rates of degradation of formic acid in an annular reactor equipped with a blacklight fluorescent lamp and in a plane reactor illuminated by an array of LEDs. The illustration of the possibilities of enhancing the performances by using reflectors completes the study. 17

40 Modelling of advanced oxidation processes in intensified photoreactors OC-31 Peralta Muniz Moreira, R. 1, Lucas, M. 1, Marotta, R. 2, Li Puma, G. 1 1 Environmental Nanocatalysis & Photoreaction Engineering, Dept. of Chem. Eng., Loughborough University, United Kingdom. 2 Dept. of Chem. Eng., University of Naples Federico II, Italy a) c) d h ( m) d) mm N.M. Reis, G. Li Puma, A novel microfluidic approach for extremely fast and efficient photochemical transformations in fluoropolymer microcapillary films, Chemical Communications, b) 2 mm This study presents the fundamentals and applications of process intensification in novel multi-scale photoreactor systems used for advanced oxidation of water and air contaminants. Radiation transport, fluid-dynamics and mass transport are all critical interlinked factors that govern the performance of chemical and photochemical reactors systems. Modelling by computational fluid dynamics CFD and simplified reaction kinetics methods will be compared for the evaluation of intrinsic reaction rate constants. Micro- and macro-scale that will be discussed include oscillatory baffled columns 1-3, single and multiplate photoreactors 4,5, and fluoropolymer microcapillary film photoreactors 6-11 used for ultrafast photochemical reactions of contaminants of emerging concern. An integrated photocatalytic-biological wastewater treatment approach utilizing an on-line control unit OC-32 Paz, Y. 1, Yaron, S. 2, Shidlovsky, Z. 1 1 Department of Chemical Engineering, Technion, Haifa, Israel 2 Department of Biotechnology and Food Engineering, Technion, Haifa Israel. A revolutionary concept for an integrated photocatalytic biological treatment is presented. The concept is based on in-situ monitoring of toxicity and turbidity, allowing for automatic operation of control loops thus constantly adjusting the sequence of the two types of reactors, the retention time in each reactor and recycling ratios according to needs. This in-situ monitoring is based on the use of genetically-engineered bacteria emitting a signal according to the biological stress that the system experiences. 18

41 SESSION 5A PHOTOCATALYTIC MEMBRANES, THIN FILMS Modification of titanium dioxide photocatalytic film electrodes with carbon nanomaterials OC-33 Ansón-Casaos, A. 1, Hernández-Ferrer, J. 1, Santidrián, A. 1, Víctor-Román, S. 1, García-Bordejé, E. 1, Benito, A.M. 1, Maser, W.K. 1 1 Instituto de Carboquímica, ICB-CSIC, Zaragoza, Spain. Thin film electrodes are prepared by spray-coating commercial TiO2 nanoparticles on a transparent conducting support. Single-walled carbon nanotubes and reduced graphene oxide rgo are utilized in different arrangements for the modification of the electrode. Changes in the capacitance and new faradaic features are observed in dark conditions. The photocatalytic activity is studied through the photoelectrochemical reactions of water, methanol, and hydrogen peroxide. Carbon nanotubes and rgo behave as acceptors of the photo-generated electrons and holes respectively. The photoactivity and the electrode character are tuned through the carbon nanomaterial type, concentration and arrangement. Enhanced photoelectrochemical activity of titanium dioxide anodes prepared by plasma electrolytic oxidation OC-34 Franz, S. 1, Arab, H. 1, Chiarello, G.L. 2, Selli, E. 2 and Bestetti, M. 1 1 Department of Chemistry, Materials and Chemical Engineering G.Natta, Politecnico di Milano, Via Mancinelli 7, Milano Italy 2 Department of Chemistry, Università degli Studi di Milano, Via Golgi 19, Milano Italy. Titanium dioxide anodes with enhanced photoelectrochemical activity were obtained by Plasma Electrolytic Oxidation of Titanium foils. Synthesis was carried out in H2SO4 electrolytes, at constant cell voltage in the range V. Depending on the processing voltage, pure anatase V, a mixture of anatase and rutile V, or pure rutile V were obtained in a single-step of 1-5 minutes. As shown in the graphical illustration, the highest photoactivity enhancement was achieved at 150 V, the maximum IPCE being 93% at 310 nm and of 65% at 380 nm under applied voltage of 0.6 V vs. SCE. 19

42 Hematite and hematite/tio2 nanostructured photoanodes for energy and environmental applications OC-35 Krysa, J. University of Chemistry and Technology, Technicka 5, , Prague, Czech Republic. Hematite prepared by aerosol pyrolysis on FTO, deposition temperature 650 C, thickness 120 nm. Fe2O3 films were deposited on transparent conductive substrates fluorine doped tin oxide FTO on glass by several methods including aerosol pyrolysis AP. The intrinsic nature of as-deposited films requires the addition of a suitable metal dopant. Sn proved to be well adapted to this task, as it increased photocurrents in junctions with an aqueous electrolyte by one order of magnitude as compared to undoped films. Sn doping can be realized via Sn diffusion from the substrate during post calcination or by the direct addition of Sn to AP precursor solution. Bi-layer hematite/tio2 film exhibits higher photo-response than single hematite film. The Faradaic efficiency of the photocorrosion reaction was found to be much lower for bilayer protected hematite electrode which proves the beneficial role of TiO2 in protecting hematite against photocorrosion. Preparation of photocatalytic thin films with composition dependent wetting properties OC-36 Janovák, L. 1, Deák, A. 1, Mérai, L. 1, Dékány, I. 1 1 Department of Physical Chemistry and Materials Science, University of Szeged, H-6720, Szeged, Rerrich B. tér 1, Hungary. The main goal of this work is to create photoreactive hybrid thin layers with tunable wetting properties from superhydrophilic to superhydrophobic nature. To achieve extreme wetting properties, the adequate surface roughness is a crucial factor. The incorporation of semiconductor photocatalyst particles into the polymer matrix with different surface tension was ensured the adequate surface roughness of the polymer layer. Beside the structural and wetting characterization of the thin films, the photocatalytic properties of the layers were measured at S/G and S/L interface, as well. At S/L interface the photocatalytic efficiency were depend on the polarity of the used model pollutants: the superhydrophobic thin film was photodegraded only the organic SUDAN IV dye solution see Figure, but the hydrophilic Methylene Blue solution did not wet the surface. 20

43 Titania-silica photocatalytic films for air treatment: new insides on the mechanical stability of the composites OC-37 Šuligoj, A. 1,2, Štangar U.L. 2, Tušar N.N. 1,3 1 National Institute of Chemistry, Ljubljana, Slovenia. 2 Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia. 3 University of Nova Gorica, Nova Gorica, Slovenia. Here, we present new insights on the mechanical stability of TiO2/SiO2 films applied on glass surface. We faund out that to achieve excellent mechanical stability of TiO2/SiO2 photocatalytic films, special care must be put to the sizes of TiO2 and SiO2 nanoparticles involved in the system and OH density between both phases. Colloidal TiO2 was used as active phase while different mesoporous SiO2 were added to increase the surface area and/or to improve mechanical stability of films. The highest photocatalytic efficiency was observed for TiO2/SiO2 films with the highest mechanical stability for decomposition of formaldehyde and toluene as two of the most common indoor air pollutants. Solar photocatalytic degradation of PVC film with Fe-doped ZnO nanoparticles having different dopant concentrations OC-38 Anirban, R. 1, Saikat, M. 2, Sampa, C. 1 1 Department of Chemical Engineering, University of Calcutta, Kolkata, India. 2 Maulana Abul Kalam Azad University of Technology, Kolkata, India. Doping with transition metals decrease band gap of semiconductors like ZnO making them more effective photocatalyst under sunlight. In this work, PVC has been degraded under sunlight in the form of a nanocomposite film. The film was prepared with Fe-doped ZnO nanoparticles synthesized with varying composition of precursor so that dopant iron concentration varies accordingly. Degradation of the film was monitored by loss of weight. The composite film was characterized by SEM and FTIR before and after exposure to sunlight for understanding the nature of degradation. It was observed that the highest degradation of 10.51% in 3 hours was achieved by the nanoparticles synthesized with mmol Fe/mmol Zn precursor mixture atomic %

44 SESSION 5B WATER TREATMENT IRON PROCESSES The double role of humic-like substances HLS in the degradation of scarcely soluble pollutants by photo-fenton at ph 5 OC-39 Arques, A., 1 Amat, A., 1 García-Ballesteros, S., 1 Santos-Juanes, L., 1 Caram, B., 2 García-Einschlag, F.S. 2 1 Grupo Procesos de Oxidación Avanzada, Campus de Alcoy, Universitat Politècnica de València. Spain. 2 INIFTA, CCT-La Plata-CONICET, Universidad Nacional de La Plata, Argentina. Humic-like substances HLS were used as iron chelating agent and pollutant solubility enhancer for the photo-fenton removal of thiabendazole TBZ under simulated sunlight. Experimental design methodology employed check the effects of H2O2, HLS and TBZ concentration. This last parameter was studied in the range mg/l, to include values above the limit of solubility at ph 5. Results obtained were very satisfactory when TBZ was above solubility if HLS and H2O2 amounts were high. This behaviour was attributed to an interaction of HLS-TBZ that enhanced the solubility of the pollutant in addition to its chelating effect on iron. Fluorescence measurements excitation emission matrices, EEM and parallel factor analysis PARAFAC showed additional evidence supporting these interactions. Action spectra of photocatalytic and photo-fenton processes for chemical oxidation and bacterial inactivation OC-40 Martín-Sómer, M., Pablos, C., van Grieken, R., Marugán, J. Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, Spain. M e th an ol oxid ation (m o l/l J) x P25 Fe-Citrate 0 Methanol oxidation Solar Irradiance Bacterial inactivation B a cterial ina ctivation (C F U /L J) x Two different catalysts with different absorption spectra TiO2 and iron citrate complex were used in order to evaluate quantitatively the action spectra and energy efficiency for chemical oxidation and bacterial inactivation of photocatalytic processes. In all cases, it was confirmed a direct relationship between the absorption spectrum of the catalyst and the spectral dependence of the photonic efficiency. The best alternative for TiO2 processes in terms of energy consumption when using artificial lighting is the use of 365 nm. In contrast, for iron complexes it seems to be more economically feasible the use of longer wavelengths. For solar irradiation, improvements above 35% with the use of Fe-citrate were predicted and validated in a CPC reactor in comparison with the traditional use of P25. 22

45 Iron alginate beads for efficient pharmaceutical removal using heterogeneous solar photo-fenton like process OC-41 Cuervo Lumbaque, E. 1, Becker, R. W. 1, Salmoria, D. A. 1, Dallegrave, A. 1, Lavayen, V. 1, Sirtori, C. 1 1 Instituto de Química-UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre-RS, Brazil. This work evaluates solar heterogeneous photo-fenton process using Fe III and iron mining residue M supported on calcium alginate as a strategy for the degradation of nine pharmaceuticals in three different water matrixes. Experimental solar photo-fenton conditions employed were: 3g of Iron/alginate spheres and an initial hydrogen peroxide concentration of 25 mg L -1 at ph 5.0. All experiments were carried out in a photo reactor with capacity of 1 L. Fe III spheres present the most resistant and the best results for treatment process and offer the possibility of reusing the catalyst. Pharmaceutical degradation was quite rapid in distilled water for the processes employing Fe III and Fe III -M. Moreover, the main transformation products TPs were identified for these two processes. Improving bacterial inactivation through enhancement of the solar photo- Fenton process with natural organic acids at near-neutral ph OC-42 Giannakis, S. 1, Schaub, A. 1, Farinelli, G. 1, Pulgarin, C. 1 1 School of Basic Sciences SB, School of Chemical Science and Engineering ISIC, Group of Advanced Oxidation Processes GPAO, École Polytechnique Fédérale de Lausanne EPFL, Station 6, CH-1015 Lausanne, Switzerland. In this study, the enhancement of the near-neutral photo-fenton by the addition of natural organic acids, toward an improved bacterial disinfection was assayed. The addition of acids contained in fruits, fruit wastes and vegetables citric, ascorbic, tartaric, glutamic, malic and quinic acid as photo-active iron chelators was attempted, and compared with known effective iron-chelating substances, such as NTA, EDTA and EDDS. Efficient bacterial inactivation occurred in all cases of enhanced SODIS and photo-fenton, i.e. in absence and presence of H2O2, indicating their potential application as solar disinfection method improvements. The absence of bacterial regrowth after treatment and effectiveness in natural water holds promise for their further field implementation. 23

46 Photocatalytic reduction of Cr VI on hematite nanoparticles in the presence of oxalic and citric acids under UV and visible light OC-43 Kretschmer, I. 1, Senn, A.M. 2, Meichtry, J.M. 2, Dillert, R. 1, Bahnemann, D.W. 1,3, Litter, M.I. 2,4 1 Leibniz University Hannover, Germany. 2 Comisión Nacional de Energía Atómica, Buenos Aires, Argentina. 3 Saint-Petersburg State University, Russia 4 Universidad de Gral. San Martín, Buenos Aires, Argentina. Under λ 310 nm, hematite nanoparticles nhm, 3 mm gave very rapid Cr VI 300 µm, ph 3 photocatalytic reduction in the presence of 2 mm citric acid Cit or oxalic acid Ox. Experiments in the absence of donors or with 0.1 M MeOH or 2-PrOH showed negligible reaction. Homogeneous experiments with FeCl3 instead of nhm showed an even faster Cr VI reduction in the presence of Cit and Ox. At 495 nm, a good Cr VI transformation took place with both donors and nhm, but lower than under UV light; in contrast, the decay is negligible in the homogeneous systems. Cr VI photocatalytic reduction was negligible at 600 nm. The behaviour was explained taking into account the absorbing species and the different mechanisms taking place under each condition. 24

47 SESSION 6A NOVEL MATERIALS FOR PHOTOCHEMISTRY AND PHOTOCATALYSIS NO TIO2 Manganese-based CO2 reduction catalysts bearing naphthalenediimide radical anion super-reductants OC-44 Martinez, J.F. 1, La Porte, N.T. 1, Sinopoli, A. 2, Wasielewski, M.R. 1, and Sohail, M. 2 1 Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Rd., Evanston, IL USA 2 Qatar Environment & Energy Institute QEERI, Hamad Bin Khalifa University HBKU, Doha, Qatar. The radical anions and dianions of rylenediimide RDI dyes, which absorb at wavelengths as long as 950 nm, are powerful photoreductants with excited state oxidation potentials that rival or exceed those of organometallic chromophores. These dyes have been previously shown to reduce organometallic centres. This study describes a set of complexes in which naphthalenediimide NDI chromophores are attached to Mn bpy CO 3Br through the bipyridine ligand. We report the preparation of three new complexes Mn 4- NDI-Ph -bpy CO 3Br Mn4NDI, A Wavelength (nm) -1.27ps 448fs 719fs 1.17ps 1.53ps 1.89ps 2.43ps 2.97ps 4.06ps 5.98ps 9.61ps 19.5ps 36.6ps 98ps 386ps 1.46ns Mn 5- NDI-Ph -bpy CO 3Br Mn5NDI and Mn 6- NDI-Ph -bpy CO 3Br Mn6NDI and subsequent photophysical and electrochemical analyses. The chromophores were reduced with a mild reducing agent, after which excitation with long-wavelength red or near-infrared light led to reduction of the Mn complex. The kinetics of electron transfer from the photoexcited anions to the Mn centre was monitored using transient visible/near-ir and mid-ir spectroscopy. The photo-driven charge shift from the reduced NDI to the complex occurs in picoseconds regardless the position of the NDI on the pyridyl fragment, whereas back electron transfer is found to be one order of magnitude slower. Controlled potential electrolysis for all the investigated complexes demonstrated an increased current under CO2 atmosphere associated with the expected reduction to CO. These results will inform the design of future catalytic systems that incorporate RDI anions as chromophores. Synthesis of layered double hydroxides for photocatalytic and environmental applications OC-45 Molano-Mendoza, M. 1, Donneys-Victoria, D. 1, Marriaga-Cabrales, N. 1, Mueses, M.A. 2, Li Puma, G. 3, Machuca-Martínez, F. 1 1 Universidad del Valle, Cali, Colombia. 2 Universidad de Cartagena, Cartagena, Colombia. 3 Loughborough University, Loughborough, United Kigdom. Recently, layered double hydroxides LDHs have attracted much consideration due to their versatility and easily manipulated properties and their potential applications such as anion exchangers, support of catalysts, flame retardants, biomedical drug delivery. A novel method for the preparation in situ of LDHs using electrocoagulation EC processes was developed, the EC process was performed under two different conditions at 5mA m -2 with changing polarity of the electrodes to find out the composition that lead to LDHs generation. The final product was characterized using XRD, BET and FTIR techniques. 25

48 Novel photocatalytic applications of halide perovskites OC-46 Schünemann, S., Chen K., Tüysüz, H. Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D Muelheim an der Ruhr Germany. We have been developing innovative synthetic methodologies to prepare well-defined halide perovskite materials for photocatalytic applications. We have demonstrated some novel photocatalytic properties of this class of materials for polymerization of 3,4-ethylenedioxythiophene trimers to poly 3,4-ethylenedioxythiophene, for pollutant degradation reactions and also selective oxidation of aromatic alcohols to aldehydes under visible light irradiation. Photosensitive Ag-containing ZnO/CeO2 composites with non-stoichiometric matrix OC-47 Gorban, O., Danilenko, I., Gorban, S., Volkova, G., Akhkozov, L., Bryukhanova, I., Konstantinova, T. Materials science department, Donetsk institute for physics and engineering NAS of Ukraine, Kyiv, Ukraine It was shown the forming of Ag-containing ZnO/CeO2 composites occurs due to complex process of decomposition and structure transformation of oxide materials and Ag-complexes. It allows obtaining photosensitive materials with different sizes and structures in one synthesized approach. For composite nanoparticles NPs with size up to 30 nm the photosensitivity connected with an anomalous decreasing of band gap energies at decreasing of NPs sizes and an effective charge separation due to electron stocks on Се 3.Vo. O2 centers and surface Ce 4 O2 - oxidative centers formation. For more big NPs sizes of this composite the plasmon resonance plays more significantly role in photosensitive properties of material. 26

49 SESSION 6B WATER TREATMENT SULFATE PROCESSES Degradation of atrazine in aqueous solution by PS/UV combined with a pretreatment using zero-valent copper OC-48 Hollanda, L.R., 1 Graça, C. A.L., 2 Andrade, L.M. 1, Chiavone-Filho, O. 1, Teixeira, A.C.S.C. 2 1 Department of Chemical Engineering, Federal University of Rio Grande do Norte, Natal, Brazil. 2 Department of Chemical Engineering, University of São Paulo, São Paulo, Brazil. The degradation of atrazine, a widely used pesticide known for its environmental persistance and endocrine disrupting activity, is investigated by the combination of a reductive process using zerovalent copper and a subsequent oxidative reaction applying sodium persulfate PS activated by UVA or UVC irradiation. An experimental design was applied and it was found that the optimum reaction conditions for the reductive stage are low ph and high metal concentration. However, no TOC removal was observed after this process. The oxidative process PS/UV was then applied on the reduced solution. Higher TOC removals were obtained by using UVCactivated PS. However, toxicity assays evidenced that a TOC decrease did not result in a less toxic solution. Degradation of ciprofloxacin by PS/UV-C, PS/ZVA and PS/UV-C/ZVA processes: performance in real surface water and effects on toxicity OC-49 Olmez-Hanci, T. 1, Arslan-Alaton, I. 1, Fiori, F. 2, Khoei, I.S. 1, Callegari, A. 2 1 Department of Environmental Engineering, School of Civil Engineering, Istanbul Technical University, Maslak, Istanbul, Turkey. 2 2 Universita Degli Studi Di Pavia, Facolta Di Ingegneria, Dipartimento Di Ingegneria Civile Ed Architettura, Pavia - Italy. The degradation and detoxification of 6 µm ciprofloxacin, a second generation fluoroquinolone type antibiotic, by UV-C and zero-valent aluminum ZVA activated persulfate PS oxidation was investigated. CIP was completely degraded in distilled water DW and real surface water RSW samples after 15min treatment with the PS/UV-C process PS 0.25mM; ph 3; UV-C 2.7W/m 2. Extended treatment periods were required for the PS/ZVA combination to ensure 90% CIP removal efficiency both in DW and RSW samples ZVA 1g/L; PS 0.25mM; ph 3. PS/UV-C experiments conducted with RSW at its natural ph 8.5 resulted in 98% CIP and practically no DOC removal 56% at ph3 after 120min. Acute toxicity tests with Vibrio fischeri exhibited fluctuating trend throughout PS/UV-C and PS/ZVA treatments and did not change appreciably after 120 min oxidation. 27

50 Enhancing solar disinfection by SO4 -: differences in bacterial inactivation mechanism with S2O8 2- vs. HSO5 - as precursors OC-50 Rodriguez-Chueca, J. 1, Giannakis, S. 2, Marjanovic, M. 2, Pulgarin, C. 2 1 Escuela Técnica Superior De Ingenieros Industriales, Universidad Politécnica De Madrid, Madrid, Spain. 2 School of Basic Sciences SB, School of Chemical Science and Engineering ISIC, Group of Advanced Oxidation Processes GPAO, École Polytechnique Fédérale de Lausanne EPFL, Station 6, CH-1015 Lausanne, Switzerland. In this work, the use of peroxymonosulfate PMS or peroxydisulfate PDS as water disinfectants was evaluated, after their activation by i solar light, ii Fe and iii heat, their 2-level and 3-level combination. Contrary to the existing applications, here we demonstrate that mild conditions, i.e. μm levels of PMS or PDS and Fe, low temperatures 50 C and solar UV, can efficiently inactivate microorganisms in water. According to the precursor and activator, the generation of different radicals presents high synergies, leading to minute-range inactivation of E. coli. Parameters such as presence of organic matter and simultaneous degradation of microcontaminants are also discussed. The variations in the process efficiency lead to the proposition of a differentiated mechanistic interpretation and mode of action, towards bacterial inactivation, presented here. Photodegradation of amoxicillin by UV, UV/H2O2 and UV/PS: reaction kinetics, degradation pathways and antibacterial activity OC-51 Yiqing, Z. and Teik-Thye, L. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore. The extensive use of non-metabolized amoxicillin AMX has led to the contamination of aquatic environment. This study investigated the reaction kinetics, degradation pathways, and antibacterial activity of AMX in UV photolysis, UV/hydrogen peroxide H2O2 and UV/persulfate S2O8 2-, PS systems. UV irradiation alone results in a negligible removal of AMX, while the addition of H2O2 or PS increases the removal efficiency of AMX significantly. The degradation pathways of AMX in the UV/H2O2 and UV/PS systems were proposed based on the experimental evidence identified by LC/MSMS coupled with theoretical calculations using frontier electron densities FEDs. The antibacterial activity of the AMX solution is eliminated completely, according to the growth inhibition tests. 28

51 SESSION 7 WATER DISINFECTION Challenges for the application of TiO2 in solar assisted disinfection of water OC-52 Giannakis, S. 1, Pulgarin, C. 1 1 School of Basic Sciences SB, School of Chemical Science and Engineering ISIC, Group of Advanced Oxidation Processes GPAO, École Polytechnique Fédérale de Lausanne EPFL, Station 6, CH-1015 Lausanne, Switzerland The use of TiO2 photocatalysis for disinfecting water aims towards the improvement of the solar-mediated bacterial inactivation SODIS by enhancing the production of Reactive Oxygen Species ROS. These make the process more drastically bactericidal and independent from the otherwise required rise in temperature. As a consequence, it may allow the treatment of larger volumes of water than 1 liter while preventing bacterial regrowth. A summary of the approaches explored to limit the drawbacks of this process will be presented, with regard to the thermodynamic, kinetic, engineering, environmental and application s points of view. A mirror-like comparison with solar Photo-Fenton disinfection will finally be presented. Quasi-instantaneous photocatalytic bacterial inactivation on nano-structured 2D/3D surfaces: femto-second lived intermediates and cell wall damage OC-53 Rtimi, S. 1 1 Affiliation, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-GPAO, Station 6, CH-1015, Lausanne, Switzerland. Co-sputtered CuOx-TiO2 consists mainly of CuO led to bacterial inactivation kinetics within 20 min under very low intensity actinic light. By X-ray photoelectron microscopy XPS, redox catalysis was observed to proceed during bacterial inactivation. The energetics and mechanism for the bacterial inactivation of E. coli on the cosputtered catalyst are suggested. The short-lived transients on the co-sputtered catalyst surface were followed by femtosecond spectroscopy in the fs-ps region. By ATR-FTIR spectroscopy, the structural changes in the E. coli lipopolysaccharides LPS bilayer were monitored during bacterial inactivation for normal bacteria with porins and porinless bacteria. A mechanism is suggested for the photo-induced interfacial charge transfer IFCT between the catalysts. 29

52 SESSION 8A MODELLING AND MECHANISTIC STUDIES IN PHOTOCHEMISTRY AND PHOTOCATALYSIS A BRDF-based Monte Carlo model of light transport for fixed-bed photocatalytic reactor simulation and design OC-54 Ramos, B. 1,2, Grisafi, F. 2, Brucato, A. 2, Teixeira, A.C.S.C. 2 1 Research in Advanced Oxidation Processes AdOx, Chemical Systems Engineering Center, Department of Chemical Engineering, University of Sao Paulo, Sao Paulo, Brazil. 2 Laboratory for Chemical and Biochemical Plants, Department of Industrial and Digital Innovation, University of Palermo, Palermo, Italy. In this work, we report a novel physically-based light transport model, designed upon a modification of the bidirectional reflectance distribution function BRDF, adapted to a Monte Carlo ray-tracing code. The model makes use of the microfacet theory approach to the BRDF, and provides a local probability distribution to determine the direction of scattered radiation at each contact event. It allows for simulating a more realistic light distribution in highly scattering media with macroscopic objects, such as packed bed and flat plate reactors for which simplified models such as the Six-Flux Method SFM cannot be used satisfactorily. Photocatalytic NOx removal: rigorous kinetic modelling and ISO standard reactor simulation OC-55 Muñoz, V. 1,2, Casado, C. 1, Suárez, S. 2, Sánchez, B 2, Marugán, J. 1 1 Department of Chemical and Environmental Technology, ESCET, Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933, Móstoles, Madrid, Spain. 2 FOTOAIR-Ciemat, Renewable Energy Division, CIEMAT, Madrid, Spain. An air purification reactor working under the standard ISO is studied and used for the determination of the intrinsic kinetic parameters of the NO photocatalytic removal. A new mechanistic kinetic model is proposed considering explicitly the radiation step. The reactor was modelled using a numerical simulation to validate ligth homogeneity reaching the catalyst surface and go deep in the knowledge of fluid dynamic behaviour. The intrinsic kinetic parameters obtained together with the kinetic expressions, were able to reproduce a wide range of experimental conditions with a global error lower than a 13%. The novel proposed global predictive approach could be successfully apply to the prediction of the performance of different type of photocatalytic reactors or even open systems for NOx pollutants. 30

53 Decoupling adsorption and photoactivity in hybrids rgo/tio2 OC-56 Claudio, M., Minella, M., Calza, P. Department of Chemistry University of Torino, Torino, Italy. Literature data on the performance and interpretation of hybrid materials are often contradictory. This is particularly evident when graphene is coupled to semiconductors. We present here a general model that consider the adsorption, photon absorption, relative positioning of the electronic bands or electronic levels, photogenerated charge carriers redistribution, with eventual suppression of their recombination, and local reactivity of the two phases. The model is able to decouple the combined effect of adsorption, reactivity and type of illumination. It was tested on the kinetic of photocatalytic degradation of 2,4-dichlophenol on hybrids TiO2/reduced-Graphene Oxide TiO2/rGO synthetized with P25 and N100 and different % rgo loadings under different irradiation conditions UV only, UV Vis and Vis only. Toward a Generalized, Simplified, First Principles Model for Photo-Fenton Process Based Degradation of Harmful Contaminants CECs OC-57 Audino, F. 1, Varga, M. 2, Csukás, B. 2, Pérez-Moya, M. 1, Graells, M. 1, Espuña, A. 1 1 Chemical Engineering Department, Universitat Politècnica de Catalunya, Spain. 2 Research Group on Process Network Engineering, Kaposvar University, Hungary. This work aims at proposing a novel modelling approach that can be able to identify an approximately unified, causally established coupling between the general photo-fenton system and the degradation of the arbitrarily chosen organic compounds. The simplified first principles model is based on our idea of consecutive breakage steps, depending on the number of carbon atoms in the molecule to be decomposed. Based on the previous results of combining Direct Computer Mapping based Programmable Structures with experimental design, this paper explains the application of the experimental and computational method for another target, as a first step toward generalization. The model may help experimentation and may also inspire the improvement of practical applications. 31

54 Thermo-Photo-catalysis: kinetic modelling of 2-propanol using a composite Ceria-Titania sample. OC-58 Muñoz-Batista, M.J. 1, Eslava-Castillo, A.M. 1, Kubacka, A. 1, Fernández-García, M. 1 1 Instituto de Catálisis y Petroleoquímica. CSIC. C/ Marie Curie, Madrid, Spain. This work describes a study carried out to construct and determine a kinetic formalism for the gas-phase degradation of 2-propanol using a combined thermo-photo based process. The kinetic expression developed for the thermo-photo degradation process explicitly includes the effect of the photon absorption in the reaction rate and leads to a mathematical formula with two components having different physico-chemical nature. The parameters coming from the kinetic modelling allow an interpretation of the catalytic properties of the ceria-titania catalyst, quantifying separately its enhanced performance with respect to its parent systems in the photonic and thermal components for the process. Advances in mathematical modelling and optimization for applications on solar photocatalysis at colombia OC-59 Mueses, M., 1 Colina-Márquez, J. 1, Machuca-Martínez, F. 2 1 Modelling & Application of Advanced Oxidation Processes, Chemical Engineering Program, Universidad de Cartagena, Cartagena, Colombia 2 GAOX Research Group, School of Chemical Engineering, Universidad del Valle, Cali, Colombia. The mathematical modelling has been used in solar photoreactors engineering during the last decade at Colombia on applications of wastewater treatment using TiO2-P25 as catalyst. Excellent results were obtained at solar pilot-scale on two platforms located on Cartagena and Cali, Colombia and a commercial industrial solar plant was building for wastewater treatment from print company on Yumbo, Colombia. Advances in this area permit optimization, scaling-up and priori evaluation of the systems, with the aim to improve the use of resources, materials, time and experiments. Different models were formulated, evaluated and validated using real experimental data with the aim to do the intensification of the process and improve the operational condition using natural solar energy. 32

55 SESSION 8B GREEN SYNTHESIS BY PHOTOCHEMISTRY AND PHOTOCATALYSIS Photocatalytic production of hydrogen from binary mixtures of C3 alcohols on Pt/TiO2: influence of alcohol structure OC-60 López-Tenllado, F.J., Hidalgo-Carrillo, J., Montes-Jiménez, V., Sanchez-López, E., Urbano, F.J., Marinas A. Departamento de Química Orgánica, Campus de Excelencia Internacional CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E Córdoba, Spain. The effect of alcohol structure on photocatalytic production of H2 from C3 alcohols was studied on 0.5% Pt/TiO2. For individual reactions from 10% v/v aqueous solutions of alcohols, hydrogen production followed the order ethanol propan-2-ol propan-1-ol glycerol 1,2-PDO 1,3-PDO. Nevertheless, the process is quite sensitive to the presence of additional alcohols in the reaction medium, as evidence by competitive reactions. Therefore, propan- 2-ol conversion was retarded in the presence of traces of the other alcohols, this effect being particularly significant for vicinal diols. Additional experiments showed that adsorption of alcohols on Pt/TiO2 followed the order glycerol propan-1,2-diol propan- 1,3-diol propan-1-ol ethanol propan-2-ol. l Towards sustainable chemical synthesis by combining metal-free photocatalysts with energy-efficient light sources OC-61 Silva, C.G., Sampaio, M.J., Lima, M.J., Fernandes, R.A., Fontes, H.F.V, Silva, A.M.T., Faria, J.L. Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, Porto, Portugal. Graphitic carbon nitride g-c3n4 was synthesized by thermal condensation of dicyandiamide and the photocatalytic performance evaluated in terms of different post-treatment routes: thermal, mechanical and chemical. Several temperatures 400, 450 and 500 oc, times of mechanical treatment 1.5, 3.0 and 8.0 h and protic acids H2SO4, HCl and HNO3 were tested. The post-treatments significantly enhance photocatalytic conversion and yield, with minimal compromise on selectivity. The photocatalyst obtained upon thermal post-treatment of g-c3n4 at 500 o C, which had the better performance 66% conversion, 59% yield, and 90% selectivity at four hours of UV-LED irradiation, was found to have the highest BET surface area 87 m 2 g

56 Photocatalytic valorisation of waste water associated with fermentation processes. OC-62 Guillard, C. 1, Betts, L.M. 1, Dappozze, F. 1 1 Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626, Villeurbanne, France CH3COOH CH4 C2H6 CO2 1 C2H5COOH C2H6 C4H10 CO C3H8 CH3CH2OH CH3CHO H2 Molar ratio 1,2 Impact of H2O on propionic degradation 0,98 1 Ethane/CO2 Ethene /CO2 0,92 0,8 0,69 Butane/CO2 0,6 0,41 0,4 0,15 0,2 0,08 0,1 0,05 0,04 0,02 0,017 0,006 0, , %H 2 0 The most common produced biomolecules of acidogenic fermentation- acetic acid AA, ethanol and propionic acid PA were degraded by TiO2 P25 under N2 at both low ppm level and high concentrations 50% and 100%. The high concentration trials of AA and PA yielded almost exclusively a 1:1 mixture of CH4/CO2 and C2H6/CO2 respectively. At trace level, alkanes are also produced, albeit it a tenth of the CO2 released and Photo-Kolbe coupling and dehydration products are detected. This behaviour suggests that the direct reaction of h with the acid is the key parameter to favour the alkane selectivity whereas OH radicals are at the origin of Photo-Kolbe coupling and dehydration products. Finally, in a mixture of AA and PA propane is formed as a result of cross-coupling. In the case of ethanol, acetaldehyde is the main product formed. HMF selective photo-oxidation in aqueous suspension of both bare and H2O2 treated carbon nitride carried out in a solar pilot plant OC-63 Marcì, G. 1, García-López, E.I. 1, Palmisano, L. 1, Ilkaeva, M. 2, Krivtsov, I. 2,3, García, J.R. 2, Díaz, E. 4, Ordóñez S. 4, Maldonado, M.I. 5,6, Malato S. 5 1 Dipartimento di Energia, Ingegneria dell informazione e modelli Matematici DEIM, Università di Palermo, Viale delle Scienze, Palermo, Italy. 2 Department of Physical and Analytical and Organic and Inorganic Chemistry, University of Oviedo-CINN, Oviedo, Spain. 3 Nanotechnology Education and Research Center, South Ural State University, Chelyabinsk, Russia. 4 Department of Chemical and Environmental Engineering, University of Oviedo, Oviedo, Spain. 5 Plataforma Solar de Almería-CIEMAT, Tabernas, Spain. 6 Centro de Investigación en Energía Solar, Joint Centre University of Almería-CIEMAT, Almería, Spain. HMF FDC This work reports a study on the reactivity of bare and H2O2 treated carbon nitride samples for a sunlight photocatalytic selective reaction. The investigation shows the effectiveness of these C3N4 based materials for the selective partial oxidation of 5- Hydroxymethyl-2-furfural HMF to 2,5-furandicarboxy-aldehyde FDC in aqueous medium in a pilot plant photoreactor irradiated by natural solar light. The reactivity results and, in particular, the selectivity to the formation of FDC have been very encouraging, especially by considering that the reaction was carried out in water. 34

57 Ring hydrogenation of aromatic compounds in aqueous suspensions of Rhloaded TiO2 photocatalyst without use of H2 gas OC-64 Nakanishi, K. 1, Yagi, R. 1, Imamura, K. 2, Tanaka, A. 2, Hashimoto, K. 2, Kominami, H. 2 1 Interdisciplinary Graduate School of Science and Engineering, Kindai University, Osaka, Japan 2 Faculty of Science and Engineering, Kindai University, Osaka, Japan. There are various possibilities of co-catalyst-assisted photocatalytic reduction CPR over a titanium IV oxide TiO2 photocatalyst, especially H2-free and chemoselective CPR. We examined photoinduced ring hydrogenation of aromatics having a carboxyl group over metal-loaded TiO2 under an H2-free condition and found that the aromatics were almost quantitatively hydrogenated to corresponding cyclohexanes having a carboxyl group when rhodium, water and oxalic acid were used as a metal co-catalyst, solvent and hole scavenger, respectively. The effects of different metal co-catalysts, solvents and hole scavengers on the ring hydrogenation were also examined. Design of photoactive polymer colloids for singlet oxygen production: application to fine chemical synthesis OC-65 Petrizza, L. 1, Le Bechec, M. 1, Decompte, E. 1, Save, M. 1, Lacombe, S. 1 1 CNRS/ Univ. Pau & Pays Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'environnement et les Matériaux, UMR5254, Hélioparc, 2 avenue P. Angot, 64053, Pau, FRANCE. Soft polymer colloids bearing a covalently linked singlet oxygenproducing photosensitizer were prepared and characterized. Their quantum yield of singlet oxygen production was determined. The more efficient samples will be further used in micro-flow reactors for fine-chemical synthesis. They allow their oxidation under visible light with oxygen from air as the sole reactant. Fig.1: General scheme of singlet oxygen production by photosensitization and use of furfuryl alcohol as a chemical quencher of 1 O2 in water. 35

58 SESSION 9A NOVEL MATERIALS FOR PHOTOCHEMISTRY AND PHOTOCATALYSIS INCREASING PHOTOSENSITIVITY Stability of Vis-active photocatalysts based on CZTS/TiO2 heterostructures OC-66 Bogatu, C., Covei, M., Perniu, D., Tismanar, I., Duta, A. Transilvania University of Brasov, Research Centre: Renewable Energy Systems and Recycling, Brasov, Romania s: The study investigates the stability and photocatalytic activity of CZTS/TiO2 thin film heterostructures, under simulated solar radiation at low irradiance values 34 W/m 2, using phenol F and imidacloprid, IMD c 10ppm as test pollutants. Promising results are obtained in phenol photo-degradation 70%, and IMD 55%, after 72 h of irradiation. The stability of the photocatalysts in the aqueous media is investigated by SEM correlated with TiO2 layer thickness and the pollutants' structure and promising results are observed considering the variation in the layers transmittance after 72 h of testing: T600 15% for IMD, T600 30% for F. These results recommend the CZTS/TiO2 thin film photocatalysts for large scale applications involving degradation/mineralization of organic pollutants from wastewaters, even at low concentrations. 3D printed floating photocatalysts for wastewater treatment. A preliminary study for the oil pollutants removal OC-67 Martín de Vidales, M.J. 1, Nieto-Márquez, A. 1, Morcuende, D. 1, Atanes, E. 1, Blaya, F. 1, Soriano, E. 2, Fernández-Martínez, F. 1 1 Technical University of Madrid UPM, Madrid, Spain. 2 Carlos III University, Leganés, Madrid, Spain. Hydrocarbon spills, specifically oil-derived fuels, have a great environmental impact, since the process of removal of these pollutants is of great difficulty. Advanced oxidation processes and, specifically, TiO2 photocatalysis are considered a good option for an efficient treatment. However, the photocatalyst must float, because the pollutant is mainly located on the surface of water. In this context, the goal of this work is to prepare floating photocatalysts for the treatment of wastewater polluted with methylene blue, as model of organic pollutant. TiO2 is deposited in low-density-polyethylene, which is used as support because this polymer presents a lower density than water and a high stability and resistance to degradation. 36

59 Conduction band engineering in semiconducting oxides: Applications in perovskite photovoltaics and beyond OC-68 Kavan L. J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, CZ Prague 8, Czech Republic. The position of conduction band edge controls the recombination blocking in electron-selective contact of perovskite solar cells, reductive photocatalytic reactions, and the potential of dyesensitized solar cells. The TiO2 and SnO2 layers are of particular interest for these applications. Amorphous SnO2 films are pinholefree for thicknesses down to 2 nm. Their excellent blocking behavior allows photoelectrode design with even thinner electron selective layers; thus minimizing resistance losses. Oxide materials, like TiO2 and SnO2 are traditionally regarded semiconductors. We have recently found purely metal-like electrochemical properties of Ta-doped, optically transparent thin films of TiO2 anatase made by pulsed-laser deposition. Modification of photocalyst morphology by ball-milling and its impact on the physicochemical properties of wet coated layers OC-69 Dzik, P., Veselý, M., Svoboda, T. Faculty of Chemistry, Brno University of Technology, Czech Republic. Mixtures of polymeric siloxane binder and titania were subjected to ball-milling for variable time. After milling, they were spin-coated onto soda-lime glass plates producing a titania-polysiloxane hybrid layers which were converted into titania-amorphous silica hybrid layers by thermal curing. Various experimental methods indicated that the ball-milling step induced significant changes in the material. While some material properties and layer parameters show monotonous systematic decrease with milling time particle size, surface roughness, layer thickness and haze, others show a maximum specific surface area, photocurrent density and photocatalytic activity. Thus by a carefull control of the milling process we can adjust and optimize the performance of both powder and immobilized photocatalysts. 37

60 @Au double shell nanoparticles loaded on rutile TiO2 nanorod for decomposition of pollutions under visible light OC-70 Ohno, T. 1,2, Kamimura, S. 1 1 Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu , Japan. 2 ACT-C, Japan Science and Technology Agency, Honcho, Kawaguchi-shi, Saitama , Japan. nanoparticles NPs. exhibited strong photoabsorption in visible light due to LSPR excitation of the Ag shell, and its LSPR characteristics were stable because oxidation of the Ag shell was prevented by the outermost Au shell. Furthermore, we successfully NPs on rutile TiO2 nanorod by an impregnation could oxidize 2-propanol into acetone and CO2 under visible light λ 440 nm, and its acetone evolution rate was approximately 15-times higher than that of Au/TiO2. From a comparison of action spectra for acetone evolution, it was confirmed that photocatalytic activity was induced by photoabsorption based on LSPR excitation of the Ag shell. 38

61 SESSION 9B WATER TREATMENT OTHER PHOTOCATALYSTS Optimizing the synthesis method of TiO2-rGO composites to improve photocatalytic degradation of pesticides OC-71 Luna-Sanguino, G. 1, Tolosana-Moranchel, A. 2, Durán-Valle, C. 3, Bahamonde, A. 1, Faraldos, M. 1 1 Instituto de Catálisis y Petroleoquímica, ICP-CSIC. Madrid. SPAIN 2 Sec. Ingeniería Química, Fac. Ciencias, UAM. Madrid. SPAIN 3 Dep. Quím. Orgánica e Inorgánica and ACYS, Univ. Extremadura, Badajoz, SPAIN. The conjugation of graphene with semiconductor particles of TiO2 could help in the development of more efficient photocatalysts capable to harvest wider solar radiation for real photocatalysis applications. TiO2 P25 and rgo composites have been prepared by hydrothermal procedure at different TiO2/GO wt. % ratios and synthesis parameters. Long time and moderate temperature offered the best interaction between TiO2 and GO, where graphene oxide seems to preserve anatase phase to massive rutile transformation. GO resulted moderately reduced during hydrothermal treatment, keeping highly disorder grade. The optimal rgo loading was found around wt. %, which achieves high photocatalytic conversion in phenol and pesticides degradation, even in natural water. Photocatalytic water purification using anatase-tio2 supported on activated carbons OC-72 Gomez-Avilés, A., Peñas-Garzón, M., Bedia, J., Belver, C., Rodríguez, J.J. Sección de Ingeniería Química, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain. Activated carbons ACs were synthesized by chemical activation with different activating agents FeCl3, ZnCl2, H3PO4 and KOH using lignin as carbonaceous precursor. These ACs were used as supports for the anchoring of anatase-tio2 by solvothermal treatment. The synthesized photocatalysts were fully characterized, confirming the crystallization of anatase phase without the needing of an additional calcination step. The use of different activating agents results in carbon-based photocatalysts with different porosity and surface chemistry. The photocatalytic performance was tested for the removal of acetaminophen using solar light as energy source. All the photocatalysts achieved a complete acetaminophen degradation under the reaction conditions, being the photocatalytic activity strongly dependent on the activating agent used. 39

62 Degradation of cloxacillin by sonophotocatalysis and its former processes in water: effect of ph and analysis of the degradation extent OC-73 Nieto-Juarez J.I., 1 Torres-Palma, R.A. 2 1 Facultad de Ingeniería Química y Textil, Universidad Nacional de Ingeniería UNI, Lima, Peru. 2 Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia. s: Degradation of cloxacillin by TiO2-photocatalysis under UVA 365 nm, high-frequency ultrasound 375kHz/80W and combined process were studied to assess the importance of these advanced oxidation processes in water treatment systems. Effect of ph and degradation extent were also evaluated. The degradation of the cloxacillin followed a pseudo-first order kinetic in all processes. At natural ph, the results showed that the combined process was the best at removing cloxacillin 60 min, being the worst the photocatalytic system 180 min. Using ultrasound, the more hydrophobic compounds were preferentially eliminated. In photocatalysis, the degradation of the more hydrophilic by-products was favored. Therefore, the combined process arises as an effective alternative to remove both CLX and its hydrophobic and hydrophilic by-products. Glyphosate breakdown by photocatalysis: reaction intermediates, mechanism and ecotoxicity OC-74 Garcia-Muñoz, P. 1, Seitz, F. 2, Rosenfeldt, R. 2, Schulz, R. 2, Dachtler, W. 3, Altmayer, B. 3, Twertek, M. 3, Keller, V. 1, Robert, D. 1, Keller, N. 1 1 Institut de Chimie et Procédés pour l'energie, l'environnement et la Santé ICPEES, CNRS, University of Strasbourg, Strasbourg, France. 2 University of Koblenz-Landau, Institute for Environmental Sciences, Landau, Germany. 3 Institute of Plant Protection, DLR-Rheinpfalz, Neustadt, Germany. This work assesses the ability of photocatalysis for removing and mineralizing the herbicide glyphosate, e.g. for viticulture wastewater treatment applications. UV-A photocatalysis allows the total glyphosate degradation with complete mineralization yield and a disappearance of waterborne ecotoxicity for the water flea Daphnia magna. However, an uncommon volcano-like trend was evidenced for the TOC evolution before achieving full glyphosate mineralization. This behavior was related to the oxidation pathway of the herbicide that we firstly report here, indicating a reaction mechanism based on a first breakdown of glyphosate via P-C and N-C bonds into smaller intermediates with no reduction of the carbon content, while they will be further fully mineralized during subsequent stages. 40

63 Self-Sensitized photocatalytic degradation of colorless organic pollutants forming surface Ti IV complexes OC-75 Macyk, W., Qi, K., Zasada, F., Piskorz, W., Indyka, P., Gryboś, J., Trochowski, M., Kobielusz, M., Sojka, Z. Faculty of Chemistry, Jagiellonian University, Kraków, Poland. Spectroscopic, photoelectrochemical and photocatalytic studies, combined with the DFT D molecular modelling, show how disubstituted benzene derivatives, like catechol, salicylic acid, phthalic acid and terephthalic acid model colorless organic pollutants, COP can tune the photocatalytic properties of rutile-tio2 in their self-sensitized degradation. Our studies reveal that depending on the OH, COOH ratio, the photodegradation can occur along direct HOMO CB operating in visible light and two step HOMO LUMO CB operating in UV light electron transfer mechanisms. Moreover, since in the photocatalytic degradation processes aromatic compounds are easily photohydroxylated, the presented results may be relevant for pollutants originally without hydroxyl functionalities. 41

64 SESSION 10 AIR TREATMENT NOX REMOVAL Micro-TiO2 supporting nano-ag with high photocatalytic visible light activity for air purification OC-76 Bianchi, C.L. 1, Stucchi, M. 1, Bonassi, V. 1, Morandi, S. 2, Cerrato, G. 2, Capucci, V. 3 1 Dept. of Chemistry, University of Milan, Milan, Italy. 2 Dept of Chemistry&NIS Interdept. Centre, University of Turin, Turin, Italy. 3 GranitiFiandre, Castellarano, Modena, Italy. Visible light nm NO VOCs NO 2 NO 3 CO 2 e h + Ag TiO 2 TiO2 photocatalysis is an efficient strategy for both air and water purification. However, TiO2-based catalysts exhibit the best performances when excited by UV light, thus the visible light activity of TiO2 needs to be improved. Moreover, the replacement of widely exploited nanoparticles with microsized materials is mandatory to solve typical problems of recovery and inhalation related to nano-materials. Here, we deposited Ag NPs on a micrometric TiO2 support. Ag NPs showed a precise ranging size distribution, being homogeneously dispersed at the surface of the TiO2 particles. Ag improved both the UV and visible light photocatalytic activity of the samples. Considering model reactions, Ag-TiO2 degraded NOx in gas-phase under both UVA and LED light. Improved nano-dispersion and De-NOx properties of active catalyst by addition of graphene support OC-77 Ye, B. 1,2, Baik, J.M. 2, Chun, S.Y. 1, Lee, D.H. 1, Kim, H.D. 1 1 Green Materials & Processes Group, Korea Institute of Industrial Technology, Ulsan, Korea. 2 School of Materials Science and Engineering, Ulsan National Institueof Science and Technology UNIST,Ulsan, Korea. Scheme. 1 Schematic diagram for fabrication method of SCR catalyst Although there is an increasing demand for Mn-base SCR catalysts that exhibit high activity in the low temperature range, there is a problem only show activity when a high contents of active material is added. In order to produce a catalyst exhibiting high activity in the low temperature region below 250 while reducing the content of the active components, we applied a graphene support. Based on high specific surface area, graphene surface functional group acts as an anchoring site to prevent particle agglomeration of active particles and helps to synthesize into nano-size, which is high catalytic efficiency. To analyse the characteristics of the improved SCR catalyst, the dispersity and particle size were confirmed by TEM and PSA analysis, and the De-NOx properties confirmed by the fixed bed reactor. 42

65 Photocatalytic properties of commercial materials for NOx abatement: current status OC-78 Martinez, C., Suárez, S., Vilanova, O., Sánchez, B. FOTOAir-Ciemat, Unit of Analysis and Photocatalytic Treatment of Pollutants in Air, Avda. Complutense 40, 28040, Madrid, Spain. s: The high levels of air pollutants such as NOx in urban areas, is a major concern for today s society. Photocatalysis is a wellstablished technology for the abatement of these pollutants. The aim of the Life MINOx-Street project is to study the photocatalytic performance for NOx removal of commercial products available in the market for facades, sidewalks and asphalts. In order to assess the applicability of these materials, the initial photoactivity of the fresh products, the influence of exposure under real outdoor conditions and the possible deactivation phenomena were studied. According to the amount of NOx eliminated, a classification for the products was proposed. The effect of the substrate, the application procedure, or the implementation at large scale was discussed. In-situ evaluation of NOx removal efficiency of photocatalytic urban pavements: LIFE-PHOTOSCALING PROJECT OC-79 Jiménez-Relinque, E. 1, Rubiano, F. 1, Grande, M. 1, Castillo, A. 1, Castellote, M. 1 1 Institute of Construction Science, Eduardo Torroja, IETcc CSIC, Madrid, Spain. s: LIFE-PHOTOSCALING s global objective is to demonstrate the validity of the photocatalytic technology in urban agglomerations, establishing the instruments to scaling up from laboratory measurements to application in our cities, by developing a decision support tool, to assess the sustainability of each particular solution in each particular environment. For this purpose, a set of new techniques and assays have been designed and implemented on 7 selected photocatalytic European materials on two demonstrator platforms constructed in Madrid city and Arganda del Rey, in Spain. In this paper, in situ evaluation of NOx removal efficiency at the platforms during 1.5 years is presented and the influence of relevant environmental variables and alteration of surface of the samples on the efficiency is critically discussed. 43

66 SESSION 11A AIR TREATMENT VOCs Determination of the Clean Air Delivery Rate CADR of photocatalytic oxidation purifiers using a closed loop reactor OC-80 Héquet, V. 1, Batault, F. 1,2, Raillard, C. 1, Thévenet, F. 2, Le Coq L. 1, Dumont E. 1 1 IMT Atlantique, GEPEA- CNRS UMR 6144, F Nantes, France. 2 IMT Lille Douai, SAGE, Université de Lille, F Douai, France. This study demonstrated that a laboratory-scale recirculation closed-loop reactor can be an efficient technique for the determination of the Clean Air Delivery Rate CADR of PhotoCatalytic Oxidation PCO air purification devices. The experimental recirculation closed-loop reactor was modeled by associating equations related to two ideal reactors: a perfectly mixed reservoir and a plug flow system corresponding to the PCO device. Theoretically, the decrease in pollutant concentration over time can be described according to a first-order decay model assuming several assumptions. Experimentally, the CADR of the apparatus was measured under different operating conditions. The influence of three operating parameters was investigated: light irradiance, air velocity and initial toluene concentration. Towards air cleaning: silica supported vanadia for gas phase removal of short chain hydrocarbon mixture OC-81 Al-Namshah, K.S. 1, S. Hamdy, M.S. 1 1 Chemistry Department, Science College, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia. First order rate constant (1/min) methane ethane ethylene propylene propane Vanadium was incorporated into TUD-1 mesoporous silica by using one-pot synthesis procedure based on sol-gel hydrothermal technique. Samples with different vanadia loading from Si/V ratio 100 to 10 were characterized by using XRD, FTIR, DR-UV-Vis, Raman spectroscopy, SEM and HR-TEM. The characterization data confirmed the formation of different active sites from vanadium species; i.e. isolated V 5, nanoparticles of V2O5, and bulky crystals of V2O5. The photocatalytic performance of the prepared samples were investigated in the elimination of hydrocarbon mixture contains methane, ethane, propane, methylene, and propylene, under the illumination of visible light. The photocatalytic activity of the prepared samples showed higher activity and longer life time than commercial photocatalysts such as TiO2 and ZnO. 44

67 Photocatalytic luminous textile for volatile organic compounds and micropollutants abatement and microorganisms inactivation OC-82 Lamaa, 1 Peruchon, 1 Lorito, 1 Brochier, 1 Hamandi, 2 Indermuhle, 2 Monnet, 2 Puzenat, 2 Gilbert, 3 Guillard 2 1 Brochier Technologies, Villeurbanne, France. 2 IRCELYON, CNRS -UCBL, Villeurbanne, France. 3 CIRI, ISERM-CNRS-ENSL-UCBL, Villeurbanne, France. Photocatalytic luminous textile made of optical fibers, developed by Brochier Technologies since 2007, combining light source and photocatalyst on the same support was optimized for air and water treatment. An overview for the different applications was described in this paper. For air treatment prototype containing a multilayer of textile was developed and tested in 1m 3 chamber. The results show a good performance. for formaldehyde, the value of CADR Clean Air Delevery Rate is 53m 3 /h. For water treatment a multilayer of textile at labscale was tested and shows high photon yield. For microorganisms, an inactivation of more than 99.99% E. coli was observed. TiO2 coated luminous textile: ideal photocatalytic system for pollutant removal from indoor air in vehicle cabin OC-83 Hamandi, M. 1, Lamaa, L. 2, Peruchon, L. 2, Brochier, C. 2, Vernoux, P. 1, Guillard, C. 1 1 IRCELYON, CNRS-Université Claude Bernard Lyon 1, Villeurbanne, France. 2 Brochier Technologies, Villeurbanne, France. s: The photocatalytic process is an efficient method to remove chemical and microbiological pollutants from indoor air in automotive cabin. In the present work, luminous textile was used at first as a light source in the photocatalytic degradation of a mixture of pollutants and compared to classical UV lamp. Then, it was used both as light source and as photo catalytic support. In this case, the durability and the deposition quality have been optimized in order to preserve good photocatalytic efficiency. This innovative textile combining light source with photocatalyst has the advantage of allowing the development of compact reactor with a considerable gain of energy. 45

68 Application of composite photocatalysts based on TiO2 active carbon in air treatment OC-84 Baudys, M. 1, Vislocka X. 2, Krysa, J. 2, Neumann-Spallart, M. 2 1 Technopark Kralupy, University of Chemistry and Technology Prague, Prague, CZ. 2 Department of Inorganic Technology, University of Chemistry and Technology Prague, Prague, CZ Removal of acetaldehyde ISO on composite photo-catalyst, ratio AC/TiO Composite powders and immobilized films of various ratio of active carbon AC /TiO2 were characterised in terms of textural properties and tested with respect to their photocatalytic efficiency of air pollutant degradation toluene, acetaldehyde, NO under UVA illumination. In the case of NO degradation, the presence of AC led to the accumulation of HNO3 in the catalyst layer and therefore to a lower production of NO2. In the case of acetaldehyde removal, the presence of AC lowered the photocatalytic activity due to light absorption. Degradation of toluene in the gas phase showed an increase of the conversion degree with increasing AC/TiO2 ratio. The influence of relative humidity RH in the gaseous reaction mixture was investigated in detail and the optimal RH range for degradation of various pollutants NO, toluene, acetaldehyde was proposed 46

69 SESSION 11B MODELLING AND MECHANISTIC STUDIES IN PHOTOCHEMISTRY AND PHOTOCATALYSIS Photon energy threshold in direct photocatalysis with metal nanoparticles key evidence from action spectrum of the reaction OC-85 Zhu, H. School of Chemistry, Physics and Mechanical Engineering, Faculty of Science and Engineering, Queensland University of Technology QUT, Brisbane, 4001, Australia. By investigating the action spectra - relationship between irradiation wavelength and apparent quantum efficiency of reactions under constant irradiance - of a number of reactions catalysed by nanoparticles including plasmonic metals, nonplasmonic metals and their alloys at near ambient temperatures, we found that a photon energy threshold exists in each photocatalytic reaction: only photons with sufficient energy can initiate the reactions. A distinct action spectra were observed in the same type of reaction catalysed by the same catalyst, due to a different substituent group, or a slightly changed reaction temperature etc. Photocatalytic activity of ZnO nanopowders: the role of production techniques in the structure defects formation OC-86 Danilenko, I. 1, Gorban O. 1, Viagin O. 2, Colbeau-Justin C. 3, konstantinova T. 1, Lyubchyk S. 4 1 Material Science Department, Donetsk Institute for physics and Engineering NAS of Ukraine, Kiev, Ukraine. 2 Institute for Scintillation Materials NAS of Ukraine, Kharkiv, Ukraine 3 Laboratoire de Chimie Physique, University Paris-Sud, Orsay, France. 4 NOVA ID FCT, Campus de Caparica, Caparica. Portugal. The effect of the type of structural defects on the photocatalytic properties of ZnO nanopowders were studied for phenol photodegradation under UV irradiation. It was shown that the use of different types of precursors for the production of ZnO leads to the formation of materials with the same phase composition and energy of the forbidden band, but different photocatalytic activity. The peculiarities of the DRS, luminescence and ESR spectra indicate the formation of different types of defects in the structure of the material: oxygen vacancies in the anionic and zinc vacancies in the cationic sublattices of ZnO synthesized from ZnC2O4 and Zn OH 2, respectively. 47

70 Spectroelectrochemical approach to the estimation of bands position and density of introduced electronic states in doped semiconductors OC-87 Kuncewicz, J. 1, Macyk, W. 1, Ohtani, B. 2 1 Faculty of Chemistry, Jagiellonian University, Kraków, Poland 2 Institute for Catalysis, Hokkaido University, Sapporo, Japan. Bulk modification of wide-bandgap semiconductors with transition metal ions is one of the widely used methods for the improvement of their spectral properties. Such doping process not only leads to creation of new electronic states within the bandgap, but also may influence density of intrinsic electronic states and bands position of semiconductor, which are crucial for its activity in photocatalytic processes. Moreover, the position of the states created upon doping determines photosensitization mechanisms and spectral range of photoactivity of doped material. In the present work spectroelectrochemical approach supported by photoelectrochemical and spectroscopic measurements have been used for the estimation of density of intrinsically present and created upon doping electronic states in titania doped with various transition metal ions. How slight modifications of TiO2 surface can significantly influence surface states distribution and therefore the photocatalytic activity OC-88 Kobielusz, M., Trochowski, M., Mróz, K., Macyk, W. Faculty of Chemistry, Jagiellonian University in Kraków, ul. Gronostajowa 2, Kraków, Poland. TiO2 deposited at P25 as a result of 10 ALD cycles - Titanium dioxide is one of the most active photocatalysts. Nevertheless, it has some drawbacks, such as the spectral range of absorbed light. Therefore, many attempts have been made to modify this material, including creation of composite materials. The synthesis of this type of materials often involves deposition of various chemicals on the surface of TiO2. When such procedures of surface modification have no influence on the titania crystal structure, often observed photoactivity changes are fully attributed to the modifier and other effects are neglected. We will demonstrate and discuss how the synthesis conditions can affect the density of surface states DOS of obtained materials. Moreover, we will demonstrate how these changes can affect the photocatalytic activity. 48

71 Structure-activity and -selectivity relation in self-cleaning photocatalytic applications OC-89 Keulemans, M. 1, Hauchecorne, B. 1, Lenaerts, S. 1, Verbruggen, S.W. 1 1 Sustainable Energy, Air & Water Technology DuEL, University of Antwerp, Antwerp, Belgium. In this work a structure-activity and -selectivity relation for photocatalytic self-cleaning applications is established for three TiO2 sources P25, P90, PC The electronic properties are rigorously characterized using an electron titration method yielding quantitative information on the amount of defect sites present in the catalysts. Surface photovoltage measurements on the other hand provide complementary information on the charge carrier recombination process. The degradation of a solid layer of stearic acid is studied using an in-situ FTIR reaction cell that enables to investigate the catalyst surface and possible formation of reaction intermediates while the reactions are ongoing. We show that the driving catalyst properties toward high activity on the one hand, and selectivity toward full mineralization on the other hand, are quite different 49

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73 Short-Oral Communications SESSION 1 Photo electro catalytic characterization of molybdenum doped BiVO4-based photoanodes for oxygen evolution SOC-01-P1 Polo, A. 1, Grigioni, I. 1, Dozzi, M.V. 1, Selli, E. 1 1 Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, Milano, Italy. Photocurrent density / ma cm -2 2,5 0.5% Mo 6+ doped BiVO 4 2,0 1,5 BiVO 4 1,0 0,5 0,0 0,25 0,50 0,75 1,00 1,25 E / V vs RHE Optically transparent molybdenum doped BiVO4 thin films were tested as photoanodes for the oxygen evolution reaction. The beneficial effect of doping in improving the poor electron transport properties of BiVO4 was systematically investigated by means of advanced photoelectrochemical techniques. TiO2/BiVO4 heterojunctions realized with the best performing dopant content exhibited a surprisingly enhanced photo electro catalytic activity compared to that of the pure composite system, suggesting the presence of synergistic effects due to doping in physical charge separation. Novel magnetic nanocomposites consisting of Ferrites-Freudenbergite systems as photocatalysts under visible light irradiation SOC-02-P2 Ciocarlan, R.G. 1, Seftel, E.M. 2, Mertens, M. 2, Hadermann, J. 3, Cool, P. 1 1 Laboratory of Adsorption and Catalysis, Department of Chemistry, University of Antwerpen, Antwerpen, Belgium. 2 VITO Flemish Institute for Technological Research, Mol, Belgium 3 EMAT, Department of Chemistry, University of Antwerpen, Antwerpen, Belgium. The treatment of wastewater for the removal of organic pollutants represents one of the most important social issues, which require a prompt answer. The present study reports the synthesis, characterization and the evaluation of photocatalytic efficiency for the mineralization of rhodamine 6G R6G and methylene blue MB, under visible light irradiation, of new smart-removal catalysts type ZnxNi1-xFe2O4- Freudenbergite MNPs-F, constituted of a mixed ferrite spinel structure and plate-like freudenbergite structure. Photocatalytic results showed that around 70% of methylene blue MB dye could be effectively degraded, in 80 minutes, under the visible light irradiation in the presence of the best catalysts. 51

74 Analysis of critical parameters in TiO2 synthesis to improve photocatalytic performance SOC-03-P3 Luna-Sanguino, G. 1, Tolosana-Moranchel, A. 3, Bahamonde, A. 1, Faraldos, M. 1 1 Instituto de Catálisis y Petroleoquímica, ICP-CSIC. Madrid. SPAIN 2 Sec. Ingeniería Química, Fac. Ciencias, UAM. Madrid. SPAIN. Use of titanium dioxide TiO2 for wastewater treatments is mainly due to its good properties to photo-catalytically degrade organic, biological and inorganic substrates. The optimization of some critical synthesis parameters temperature, purification step and rate of heating-treatment of TiO2 catalysts by sol-gel method has been carried out to improve photocatalytic efficiency on phenol photo-oxidation. Characterization studies have revealed the presence of uncommon anatase /brookite structure, where minor anatase crystallite size and higher surface area have led to improve photocatalytic activity. Photocatalytic hydrogen evolution over K2Ti6O13 rods SOC-04-P4 Garay-Rodríguez, L.F. 1, Torres-Martínez L.M. 1, Moctezuma E. 2 1 Departamento de Ecomateriales y Energía, Universidad Autónoma de Nuevo León, San Nicolás de los Garza N.L., México. 2 Universidad Autónoma de San Luis Potosí, San Luis Potosí, S. L. P., México. K2Ti6O13 rods were synthesized by sol gel method. A variation in the sol agitation using magnetic, ultrasound and microwaves stirring caused a significant modification in their rods length, optical and textural properties. This change improved the photocatalytic H2 evolution, increasing their activity when rods were longer U-SG, 3.3 mmol/gh evaluated with pure water. However, when ethanol was used as sacrificial agent, particles with higher surface areas C-SG promoted a higher adsorption of alcohol and increased H2 production 11 mmol/gh. Photocatalytic activity in both processes is explained in terms of this differences caused for this synthesis conditions. 52

75 Mo-doped TiO2 photoanodes using heterometallic polyoxotitanate Ti4Mo2O8 OEt 10 2 cages as a single source precursor SOC-05-P5 Regue, M. 1,2, Armstrong, K. 3, Walsh, D. 2, Richards, E. 3, Johnson, A. 1,4, Eslava, S. 1,2 1 Centre for Sustainable Chemical Technologies, University of Bath, UK. 2 Department of Chemical Engineering, University of Bath, UK. 3 EPR and ENDOR Spectroscopy, Cardiff University, UK. 4 Department of Chemistry, University of Bath, UK. Herein, we present a novel, facile and rapid strategy to develop Modoped TiO2 Mo:TiO2 mixed anatase-rutile photoanodes, with superior properties over pure TiO2, using Ti4Mo2O8 OEt 10 2 heterometallic polyoxotitanate cages as a single source precursor. XRD, EDX, Raman, and electron paramagnetic resonance indicate that remaining Mo atoms are well spread and incorporated in the TiO2 lattice. UV-Vis spectroscopy and incident-to-photon efficiency measurements show these Mo:TiO2 photoanodes possess a narrower band gap 2.7 ev than TiO2 3.1 ev and higher efficiency in the visible light range. Finally, photocurrent measurements show that Mo:TiO2 photoanodes outperform TiO2 by a factor of two at 1.23 VRHE. Photocatalytic hydrogen production from over lanthanides doped TiO2 in powder form and immobilized form on foam SOC-06-P6 Edelmannová, M. 1, Reli, M. 1, Matějová, L. 1, Troppová, I. 1, Lang, J. 1, Dubnová, L. 2, Čapek, L. 2, Kustowski, P. 3, Kočí, K. 1 1 Institute of Environmental Technology, Faculty Metallurgy and Material Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava - Poruba, Czech Republic. 2 Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, Czech Republic. 3 Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków, Poland. Parent TiO2 and lanthanum or neodymium doped TiO2 photocatalysts with 0.1 wt. % of lanthanide were prepared by using the sol-gel method controlled within reverse micelles of nonionic surfactant Triton X-114 in cyclohexane. Part of prepared photocatalysts was immobilized on Al2O3 foams Vukopor A. The physico-chemical and electronic properties of all synthesized photocatalysts were characterized by using several complementary characterization methods. The activity of prepared photocatalysts was investigated for the photocatalytic reduction of ammonia in two geometrically different photoreactors. Correlation between electron and hole energies and photoactivity have been studied in detail. 53

76 Plasmonic core-shell nanoparticles for photocatalytic applications SOC-07-P7 Blommaerts, 1 Asapu, 1 Bals, 2 Lenaerts, 1 Verbruggen 1 1 Sustainable Energy, Air and Water Technology DuEL, University of Antwerp, Antwerp, Belgium. 2 Electron microscopy for materials science EMAT, University of Antwerp, Antwerp, Belgium. Photocatalytic oxidation with TiO2 is a viable technology for the abatement of volatile organic compounds VOCs. Surface modification with plasmonic nanoparticles is a promising method to further improve the photocatalytic efficiency. Silver nanostructures display surface plasmon resonance SPR in the UV region, matching the absorption spectrum of TiO2. A strong electromagnetic near-field enhancement is associated with SPR, leading to a strong increase in electron-hole pair formation. To ensure stable silver nanoparticles, a polymer shell is deposited around to form core-shell particles. The UV efficiency can be enhanced even more by using an innovative reactor design in which an optimal photon absorption is ensured. The effect of Zr loading on photocatalytic activity of Cu modified TiO2 SOC-08-P8 Pliekhova, O. 1, Pliekhov, O. 3, Fanetti, M. 1, Arcon, I. 1,2, Novak Tusar, N. 1,3, Lavrencic Stangar, U. 1,4 1 University of Nova Gorica, Nova Gorica, Slovenia. 2 Jozef Stefan Institute, Ljubljana, Slovenia. 3 National Institute of Chemistry, Ljubljana, Slovenia. 4 University of Ljubljana, Ljubljana, Slovenia. Copper/zirconium surface modified photocatalysts were prepared by modification of commercial titanium dioxide Aeroxide Degussa P25. Acidic sites titration allows distinguishing between anatase and rutile phases on the surface of nanoparticles. With this method we showed that copper nanoclusters gradually grow on acidic sights belonging to both anatase and rutile phases, however, zirconium modification leads to covering of all acidic sites originating from rutile. In case of combined Cu/Zr modification, zirconium species acts as a shield, covering rutile surface, which results in copper/anatase interaction preferably. Hereby, Cu/Zr modification prevents harmful changes induced by copper at higher loading on rutile surface and appears to be beneficial. 54

77 Nb-TiO2: dependence of photoactivity on dopant concentration SOC-09-P9 Murzin, P.D. 1, Murashkina, A.A. 1, Laptenkova, A.V. 1, Emeline, A.V. 1 1 Laboratory Photoactive Nanocomposite Materials, Saint-Petersburg State University, Ulyanovskaya str. 1, Peterhof, Saint-Petersburg, Russia. The aim of the study was to carefully investigate influence of Nb doping on photoactivity of TiO2 in concentrations up to 1 at. %. Twenty samples were synthesized and characterized by XRD, SEM, EDX, BET, Raman and DR spectroscopy. Photoactivity was evaluated as phenol degradation rate. The main parameters: phase composition, particle size, BET area and band gap remain the same. Nevertheless the dependence of photoactivity on Nb concentration indicates presence of two explicit maxima which is an issue for further investigations. Spectral radiative analysis of a bio-inspired H2 production system SOC-10-P10 Supplis, C. 1, Gros, F. 1, Dauchet, J. 1, Roudet, M. 1, Gloaguen, F. 2, Cornet, J.F: 1 1 Université Clermont Auvergne, CNRS, Sigma Clermont, UMR 6602 Institut Pascal, F Clermont-Ferrand, France 2 UMR 6521, CNRS, Université de Bretagne Occidentale; CS 93837, Brest, France. The iron thiolate complex is a simplified model of the active site of diiron hydrogenase enzymes. Here, we describe the implementation of this noble-metal-free catalyst in an experimental bench specially designed for the study of H2 photoproduction. The bench is composed of an adjustable visible light source, a fully equipped flat torus photoreactor and analytical devices. Rates of H2 production under varied experimental conditions were obtained from an accurate measurement of pressure increase. A spectral radiative analysis has been carried out. Results have proven the rate of H2 production is proportional to the mean volumetric rate of radiant light absorbed demonstrating a linear thermokinetic coupling. 55

78 Synthesis of carbon-doped TiO2 thin films via reactive magnetron sputtering for visible light photocatalysis SOC-11-P11 Klaysri, R. 1,2, Ratova, M. 2, Praserthdam, P. 1, Kelly, P. 2 1 Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Chulalongkorn University, Bangkok, Thailand. 2 Surface Engineering Group, Manchester Metropolitan University, Manchester, UK. The present work describes the use of pulsed direct current magnetron sputtering for the deposition of carbon-doped TiO2 coatings, using CO2 as the source of carbon; ratios of O2/CO2 were varied through variations of CO2 flow rates and oxygen flow control setpoints. Coatings were post-deposition annealed at 873 K and analysed with various means of techniques. The photocatalytic properties of the thin films were evaluated under visible light irradiation using methylene blue decomposition test. It was found that, though C-doping resulted in improved dye degradation compared to undoped TiO2, the visible-light-induced photoactivity of Carbon-doped photocatalysts was lower the model pollutant used. Comparison among 3 AOPs for the treatment of the recalcitrant safranin T dye SOC-12-P12 Hincapié-Mejía, G. 1, Granda-Ramírez, C. 1, Serna-Galvis, E. 2, Torres-Palma, R. 2 1 Grupo de Investigación GIAHS, Institución Universitaria Colegio Mayor de Antioquia, Medellín, Colombia 2 Grupo de Investigación GIRAB, Universidad de Antioquia UdeA, Medellín, Colombia. In cell staining processes, used to differentiate Grampositive and Gram-negative microorganisms, wastewaters are produced with a 1,2 high concentration of dyes. These compounds are noxious and 1 carcinogenic and induce strong negative environmental effects. Such dyes have low biodegradability and they are recalcitrant to 0,8 conventional biological treatments 0,6 This work studies the treatment of safranin T SF, a recalcitrant Photo Fenton 0,4 UV254/H2O2 cell-staining dye by three photochemical advanced oxidation 0,2 TiO2 Photocatalysis technologies TiO2-photocatalysis, UV/H2O2 and photo-fenton. 0 The popular photo-fenton process was unable to degrade SF. In it turn, the UV/H2O2 and TiO2-photocatalysis were able to remove SF, Time (min) being the latter the most efficient to mineralize the dye. C/Co 56

79 SESSION 2 Cost-effective solar collector to promote photo-fenton reactions: case study on tertiary treatment of urban mature leachate SOC-13-P13 Gomes, A.I. 1, Silva, T.F.C.V. 1, Duarte, M. 1, Boaventura, R.A.R. 1, Vilar, V.J.P. 1 1 Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials LSRE-LCM, Faculty of Engineering, University of Porto FEUP, Rua Dr. Roberto Frias, , Porto, Portugal. In this work, the efficiency of solar collectors with different reflective materials and geometries was assessed. Ferrioxalate actinometry was performed, at lab-scale under simulated sunlight, and the optical concentration ratio CRO was established: SS-F 0.59 R85-F 0.60 R85s-DP 0.67 SS-SP 0.70 SS-DP 0.72 MS- DP 0.84 R85-DP These results agree with the ray trace and the specular reflectance analysis. The impact of 8 years of outdoor aging on the aluminum reflectors was clearly shown. The kinetic constants for the DOC degradation over time for the photo- Fenton lab-trials with an urban mature leachate, presented a clear relation with the CRO of each reflective surface. The reflectors performance was also validated at pilot-scale, under natural sunlight. Influence of operating parameters on the single pass removal efficiency during the photocatalytic degradation of acrylonitrile SOC-14-P14 Whyte, H.E., Raillard, C., Subrenat, A., Héquet, V. IMT Atlantique GEPEA-CNRS UMR 6144, IMT Atlantique, Nantes, France. Photocatalytic Oxidation PCO is becoming increasingly popular for use in stand-alone devices that treat indoor air. In the hospitals, the operating room OR is one of the most demanding zones with respect to air quality. Acrylonitrile is a typical OR contaminant as it is one of the pollutants found in surgical smoke. The PCO of acrylonitrile was therefore performed in a closed loop reactor with the objective of studying the influence of air velocity, light intensity and initial concentration on the single pass removal efficiency. PCO was effective in degrading acrylonitrile. The kinetic degradation curve was shown to follow a first order. A first order decay model was then fit to experimental points to determine the single-pass removal efficiency. Consequently, the effect of the operating parameters on the single pass removal efficiency will be determined. 57

80 Elimination of contaminants of emerging concern by solar photoelectro-fenton process at pilot plant scale SOC-15-P15 Salmerón, I. 1, Oller I. 1, Sirés I. 2, Plakas K.V. 3, Maldonado M.I. 1, Malato S. 1 1 PSA-CIEMAT. Tabernas Almería, Spain. 2 Laboratori d Electroquímica dels Materials i del Medi Ambient, Universitat de Barcelona, Barcelona, Spain 3 CERTH-CPERI, Thessaloniki, Greece. This work examines the degradation of compounds of emerging concern listed in 2013/39/EC Directive, such as pentachlorophenol, terbutryn, chlorfenvinphos and diclofenac in a concentration of 200 μg/l each, by electro-fenton and solar photoelectro-fenton processes, at a pilot scale. The pilot plant that was designed and installed at the Plataforma Solar de Almería consists of an undivided electrochemical reactor with a Nb-BDD anode and a GDE as cathode, coupled to a CPC photoreactor. Optimum operation conditions were tested and compared for the elimination of the mixture of contaminants at natural ph ~6 by using EDDS as iron complexing agent to promote Fenton-type oxidation reactions. The degradation was higher than 80% in all cases. Evaluation of the effect of photocatalytic ozonation with TiO2, heterogeneous catalytic ozonation and photocatalysis in the degradation of pollutants emerging using a flotation cell Lara, J. 1, Sánchez, K. 1, Valencia, D. 1, Diaz, J. 1, Machuca, F. 1, Mueses, M. 2 1 Universidad del Valle, Ciudad Universitaria Meléndez A.A , Cali, Colombia. 2 Universidad de Cartagena, Av. Consulado , Cartagena, Colombia SOC-16-P16 The purpose of the present work was to evaluate the combination of different advanced oxidation processes AOP in the degradation of 30 ppm of caffeine, besides studying the effect of the distribution of TiO2 particles and ozone bubbles produced by the rotor of a flotation cell in the combination of these AOP. On average, a greater percentage of degradation was achieved with the heterogeneous catalytic ozonation compared with the photocatalytic ozonation, however, a better behaviour was achieved in the mineralization with the photocatalytic ozonation at higher revolutions of the cell rotor. While the catalytic ozonation was not found a significant difference in the mineralization with the variation of the rotor rpm. 58

81 Use of UVA-LED in the elimination of organics in water by different advanced oxidation processes SOC-17-P17 Figueredo, M., Rodríguez, E.M., Checa, M., Beltrán, F.J. Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad IACYS, Universidad de Extremadura, Avda. Elvas s/n Badajoz Spain. The efficiency of the photocatalytic ozonation process on the degradation of primidone and oxalic acid in water has been studied focusing on the feasibility of UVA LED as light source. Light Emitting Diodes LEDs are more environmentally than other artificial UV sources because they are more energy efficient and mercury-free. Ozonation and photolytic ozonation systems were compared to observe any possible synergism between the different systems involved. Ozone partly decomposed under UVA and this was enhanced by the presence of oxalic acid. TiO2/UVA photocatalysis achieved more than 90% mineralization of oxalic acid acid within 40 minutes of reaction time regardless of the presence of ozone, whereas for primidone the beneficial effect of ozone in TOC conversion was higher. Effect of ionic environment on UVA-LED/TiO2 photocatalysis of azo dye solution SOC-18-P18 Smolný, Cakl, Palarčík Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic. The photocatalytic decolorization and degradation of an organic azo dye aqueous solution under UVA/TiO2 heterogeneous photocatalysis was studied using spectrophotometry, TOC, COD, and zeta-potential measurements. The COD, TOC and spectrophotometric data provided the description of the thermodynamics and kinetics of the dye degradation process, while electrokinetic measurements allowed assessment of the nature of internal interactions. The parameters investigated were: ph, initial azo dye concentration, catalyst loading and concentration of sodium ions. Both the ph and sodium content had a crucial effect on the value of zeta potential and consequently on the coagulation, adsorption and degradation processes. 59

82 Assessment of different reactor configurations for a diphenhydramine removal by UV-A LED photo-fenton process SOC-19-P19 López, N., Cruz-Alcalde, A., Romero, L., Chávez, M., Marco, P., Giménez, J., Esplugas, S. Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, Universitat de Barcelona, C/ Martí i Franqués 1, 08028, Barcelona, Spain, Research about the use of light emitting diodes LEDs for water treatment has increased in recent years. The effect of irradiation UV-A LED λ nm on the efficiency of photo-fenton oxidation was assessed using diphenhydramine hydrochloride DPH as a target compound 50 mg/l with 10 mg/l of Fe 2 and 150 mg/l of H2O2. Three different reactor configurations were tested LEDs placed in the center, on the cover above 4.5 and 9 cm of liquid surface. All experiments were carried out in a 0.5 L batch reactor at ph 2.8. The best results were obtained for LEDs on the cover with 4.5 cm of liquid depth. Total degradation was achieved at 20 min and 76.40% of TOC reduction at 60 min. Kinetic constants were also estimated referred to the irradiation time h -1 or accumulated energy kj -1. Finally, UV254 and its possible relationship with formed intermediates was also evaluated. Humic-like substances isolated from olive mill wates as iron complexating agents in solar-driven processes for pollutans removal SOC-20-P20 García-Ballesteros, S. 1, Grimalt, J. 1, Bianco-Prevot, A. 2, Laurenti, E. 2, Amat, A.M. 1, Arques, A. 1 1 Grupo de Procesos de Oxidación Avanzada. Universitat Politècnica de València., Alcoy, Spain. 2 Dipartamento di chimica, Università degli studi di Torino, Torino, Italy. Humic like substances has been isolated from olive mill wastes. The photocatalitic activity of the obtained substances was proved for caffeine degradation by photo-fenton process at ph 5. An increase in the OMW-HLS concentration resulted in reaction rate decrease. The ability of OMW-HLS to generate reactive OH species was also proved. Under photo-fenton conditions in presence of H2O2 and Fe 2 OMW-HLS improve OH generation, although a substance excess is detrimental. 60

83 Iron oxide as promoter of antibiotic activity elimination of waters contaminated SOC-21-P21 with enrofloxacin: semiconductor photocatalysis and heterogeneous Fenton reaction Jojoa-Sierra, S.D. 1,2, Torres-Palma, R. 2, Herrero-Albillos, J. 3, Mosteo, R. 1, Ormad M.P. 1 1 Grupo Calidad y Tratamiento de Aguas, Departamento de Ingeniería Química y Tecnologías del Medio Ambiente, Universidad de Zaragoza, Calle María de Luna 3, Zaragoza, Spain. 2 Grupo de Investigación en Remediación Ambiental y Biocatálisis GIRAB, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, UdeA, Calle 70 No , Medellín, Colombia. 3 Centro Universitario de la Defensa, Carretera de Huesca s/n, 50090, Zaragoza, Spain. The elimination of antibiotic activity AA of the fluoroquinolona enrofloxacin ENR using Wüstite an iron oxide was evaluated in presence and absence of UV light and hydrogen peroxide. The contribution of semiconductor photocatalysis and heterogeneous Fenton and photo-fenton reaction was investigated. Now, test in wastewaters as well as the ENR evolution and the identification of initial ENR by-products are being carried out to better understand the degradation pathways and to determine the extent of the treatment and the correlation between degradation products and the AA. Petroleum refinery wastewater treatment by photo-fenton and photo-catalysis under solar light irradiation SOC-22-P22 Demir Duz, H., García Álvarez, M., Contreras, S. Chemical Engineering Department, Universitat Rovira I Virgili,Tarragona,Spain. In this study, oil refinery wastewater has been simulated as complex as the real one, which includes aromatic and aliphatic organics as well as inorganic components. The treatment performances of this water by photo-fenton and photo-catalysis have been compared in order to find an easy and cost-effective treatment solution to this high volume wastewater producer sector. According to TOC analyses, 82% of TOC removals have been achieved after both 90 min photo-fenton and 6 h photo-catalysis. Experiments have been examined qualitatively and quantitatively in detail by GC-MS, HPLC and TOC. 61

84 Improving sulfate radical generation using Fe III complexes for water and soil washing effluent treatments SOC-23-P23 Tao, Y. 1,2, Yuan, Y. 1,2, Brigante, M. 1, Wu, F. 2, Zhang, H. 2, Mailhot, G. 1 1 Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, Clermont-Ferrand, France. 2 School of Resource and Environmental Sciences, Wuhan University, Wuhan, China. uca.fr The main goal of this work is to photo-generate sulfate radicals with Fe III organic complexes for the treatment of a wide variety of wastewaters. In fact, sulfate radical is also a strong oxidative species but with a much longer half-life time than hydroxyl radical and also with a better selectivity avoiding detrimental reaction with natural organic matter or specific ionic species widely present in aquatic compartments. Moreover, the generation of sulfate radicals can be obtained in wider range of ph compare of the classical Fenton or photo-fenton processes. The different results presented in this paper show that sulfate radical is very often less reactive with a specific organic pollutants than hydroxyl radical but as the contrary the efficiency of pollutants removal with sulfate radical could be higher in a specific case like in soil washing effluent treatment. The effect of oil sands process water inorganic matrix on the photodegradation of organic contaminants SOC-24-P24 Qin, R., Gamal El-Din M. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 1H9. Oil sands process water OSPW contains complex inorganic and organic compounds. The main objective of this study was to investigate the effect of OSPW inorganic matrix IM on the photodegradation of the organic contaminants. To achieve it, OSPW inorganic fraction was obtained by removing the organic fraction with activated carbon adsorption. Photolytic process with the light emission from 200 nm to 530 nm was applied to model naphthenic acids NAs spiked in buffer or OSPW inorganic solution. After UV exposure, NAs in OSPW inorganic solution were degraded with time, while no degradation was observed in buffer. This indicates that OSPW IM accelerated the photodegradation of NAs. It presumably attributes to the generation of radical intermediates or photoactive metals-nas complex with the presence of OSPW IM under UV exposure. 62

85 SESSION 3 The feasibility of the continuous flow operation to disinfect WWTP secondary effluents at neutral ph by solar photo-fenton in raceway pond reactors SOC-25-P25 De la Obra Jímenez, I. 1,2, Esteban García, B. 1,2, Rivas Ibañez, G. 1,2, Sánchez Perez, J.A. 1,2 1 Solar Energy Research Centre CIESOL, Joint Centre University of Almería-CIEMAT, Almería, Spain. 2 Department of Chemical Engineering, University of Almería, Almería, Spain. Recently, the wild bacteria inactivation in WWTP effluents has been reported by solar photo-fenton at neutral ph in open reactors named raceway 3. In this work the photocatalytic inactivation of wild total coliform, Escherichia coli and Enterococcus sp. from real secondary effluents was evaluated in raceway working in continuous flow at neutral ph. The real effluents were treated at three hydraulic residence times HTRs 15, 30 and 60 min with 5 cm liquid depth. Total wastewater disinfection at steady state in 60 and 30 min of HRTs was achieved. Nevertheless, only 1-log inactivation was obtained at steady state in 15 min HRT. How industrial contamination can influence secondary effluent disinfection by UV/H2O2 SOC-26-P26 Malvestiti, J.A., Dantas, R.F. School of Technology, University of Campinas, Paschoal Marmo 1888, , Limeira, SP, Brazil. The variation in reactivity and composition of the effluent can delay the inactivation of microorganisms due to the presence of competing reactive material to react with oxidants. The objective of this work was to verify the efficiency of UV/H2O2 treatment to disinfect municipal effluents as well to verify the influence of metals and industrial pollutants on the disinfection and reactivation of total coliforms and Escherichia coli after UV/H2O2 treatment. The results showed that UV/H2O2 treatment and the regrowth were affected by the presence of Al, Pb and industrial pollutants. In general, they reduced the inactivation of total coliforms and E. coli. However, the transition metals Fe, Zn, Cu, Ni and Cr acted as catalysts of disinfection. 63

86 Disinfection of seawater by UV-activated persulfate: performance and effects derived from different aqueous matrices SOC-27-P27 Moreno-Andrés, J. 1 ; Rios-Quintero, R. 1 ; Acevedo-Merino, A. 1 ; Nebot, E. 1 1 Department of Environmental Technologies, INMAR-Marine Research Institute,University of Cádiz. Puerto Real, Cádiz, Spain. Seawater treatment is increasingly required in order to avoid microbiological pollution related to aquaculture or ballast water management. In this study, we tested the efficacy of persulfate activated with UV-light as a novel system against E. faecalis in bench-scale. After testing a range of PS concentrations 0 10 mm and exposure times 0-5 min in distilled water, we determined 0.5 mm of PS as an optimum dosage. This concentration was tested with different aqueous matrices artificial seawater and real seawater. Disinfection efficiency was determined by kinetic modelling; it was enhanced by up to 44.94% in comparison with UV. The results suggest PS as an attractive alternative to other biocides currently in use for seawater treatments and merits further testing at a larger scale. Inactivation of E. coli and E. faecalis by sulphate radicals under natural sunlight in a solar compound parabolic collector reactor SOC-28-P28 Ferreira, L.C. 1, Castro-Alférez, M. 2, Nahim-Granados, S. 2, Polo-López, M. I. 2, Lucas, M. S. 1,3, Li Puma, G. 3, Fernández-Ibáñez, P. 4 1 CQVR, Chem. Depart., Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal. 2 Plataforma Solar de Almería CIEMAT, Almería, Spain. 3 Chem. Eng. Depart., Loughborough University, Loughborough, UK. 4 ERI, Ulster University Antrim, UK. Inactivation of pathogens by solar irradiation and sulphate radicals The inactivation of two pathogenic microorganisms, E. coli and E. feacalis by peroxydisulphate PSD was investigated to determine the effect of sulphate radicals concentration and temperature on water disinfection under sunlight. Three different reactors were used: a thermal block 2 ml, a solar stirred tank 200 ml and a compound parabolic collector 60 L. Results showed that: i the higher the sulphate radicals concentration, the higher the kinetic inactivation rate, observing the same behaviour with temperature; ii both pathogens were inactivated in 30 minutes under sunlight and 0.5 mm of PSD, faster for E. coli; iii PSD enhanced all the inactivation kinetics; iv dark experiments revealed slower kinetics for E. coli than E. feacalis; v PSD concentration remained constant throughout the experimental time. 64

87 Total Inactivation of indigenous cefotaxime resistant Escherichia coli in secondary effluents from several UWWTPs by solar photo-fenton process in raceway pond reactors Lorenzo, A. 1, Fiorentino, A. 2, Esteban, B. 1,3, Rizzo, L. 2, Sánchez, J.A. 1,3, Agüera, A. 1 1 Solar Energy Research Centre CIESOL, Joint Centre University of Almería-CIEMAT, Almería, Spain. 2 Department of Civil Engineering, University of Salerno, via Giovanni Paolo II, 1, Fisciano, SA, Italy. 3 Department of Chemical Engineering, University of Almería, Almería, Spain. SOC-29-P29 This work was aimed to investigate the efficiency of wastewater disinfection by solar photo-fenton 50 mg H2O2 L -1 and 20 mg Fe 2 L - 1 at pilot scale in raceway pond reactors to inactivate total E. coli T E. coli and cefotaxime resistant E.coli R E. coli. Effluents of two urban wastewater treatment plants UWWTPs, with different chemical characteristics were tested. Total microbial inactivation was achieved in both wastewater effluents. Therefore, these results suggest that solar photo-fenton in raceway pond reactors could be a good alternative to conventional treatments for the removal of antibiotic resistant bacteria from urban wastewater. Consequently, these treated effluents can be reused for agricultural irrigation accomplishing the Spanish Legislation RD 1620/2007. Singlet oxygen - A potential disinfectant agent SOC-30-P30 Foszpańczyk, M. 1, Gmurek, M. 1,2, Ledakowicz, S. 1 1 Lodz University of Technology, Faculty of Process and Environmental Engineering, ul. Wólczańska 213, Łódź, Poland. 2 CIEPQPF Chemical Engineering Processes and Forest Products Research Center, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal. This work presents the results of water disinfection using singlet oxygen generated during photosensitisation process. Escherichia Coli and Enterobacter aerogenes were used as bioindicator in the microbiological assessment of water purity before and after photodisinfection. Derivatives of phthalocyanines, porphyrin and Rose Bengal were immobilized on chitosan beads and used for generation of singlet oxygen. During process the reaction system was irradiated and aerated. The obtained results confirm the germicidal character of singlet oxygen. 65

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