Heavy metals and organic contaminants in Bavarian composts an overview

Transcription

1 CODIS Heinz Riedel, Bavarian Environment Agency Solothurn, February 7 th, Introduction Biowaste separation: Cornerstone of integrated waste management Since the 199ies increasing coverage by bring / kerbside systems Core principle: Quality first! Year Collection Mg/a Mg/a Mg/a Mg/a Biowaste, Bavaria Compost, composted fermentation residues.33 1 Mg/a.5 1 Mg/a. 1 Mg/a.5 1 Mg/a CH-Solothurn 7th 9th February 1/7

2 CODIS Sampling Carried out in September Compost plants included: 1 household biowaste compost plants (HBW-CP) 1 green waste compost plants (GW-CP) 5 plants for anaerobic digestion of household biowaste (composted digestate; HBW-ADP) 1 plant composting paper sludge and green waste (PS_GW-CP) 3 Parameters / methods I Heavy metals: Cd, Cr, Cu, Ni, Pb, Zn Hg aqua regia digestion ICP-MS solid phase-aas Organic contaminants: PAH PCDD/F PCB biphenyl HCB PCP o-phenylphenol bisphenol A organic solvent aqueous organic solvent GC-HRMS GC-HRMS GC-HRMS 1 compounds 17 congeners + 1 congeners CH-Solothurn 7th 9th February /7

3 CODIS Parameters / methods II Organic contaminants (cont d): DEHP i-nonylphenol tin-organic compounds Galaxolide (HHCB) Tonalide (AHTN) PBDE thiabendazole LAS 1) PFT ) triclosan 3), methyl-triclosan 3) organic solvent GC-AED LC-MS/MS LC-MS/MS compounds compounds 7 compounds compounds 1) only samples from HBW-ADP ) only samples from 3 HBW-CP, 1 HBW-ADP, 1 PS_GW-CP 3) only samples from 3 HBW-CP 5 Heavy metals I Cd [mg/(kg dry wt.)] Cr [mg/(kg dry wt.)] 1. Cu [mg/(kg dry wt.)] 1 LV Hg [mg/(kg dry wt.)] (N=1) (N=1) (N=5) (N=1) (N=1) (N=5) CH-Solothurn 7th 9th February 3/7

4 CODIS Heavy metals II Ni [mg/(kg dry wt.)] Pb [mg/(kg dry wt.)] (N=1) (N=1) (N=5) Zn [mg/(kg dry wt.)] 3 1 (N=1) (N=1) (N=5) 7 Heavy metals III chronological sequence 1 Cu [mg/(kg dry wt.)] Zn [mg/(kg dry wt.)] 3 1 HBW-CP GW-CP HBW-CP GW-CP CH-Solothurn 7th 9th February /7

5 CODIS Organic contaminants I PAH [mg/(kg dry wt.)] 1 PCDD/F [ng I-TEQ/(kg dry wt.)] Indicator-PCB [µg/(kg dry wt.)] 1 WHO-PCB [ng WHO-TEQ/(kg dry wt.)] (N=1) (N=1) (N=5) (N=1) (N=1) (N=5) 1 9 Organic contaminants II 1 1 HCB [µg/(kg dry wt.)] PBDE [µg/(kg dry wt.)] (N=1) (N=1) (N=5) (N=1) (N=1) (N=5) 1 CH-Solothurn 7th 9th February 5/7

6 CODIS Organic contaminants III chronological sequence PAH [mg/(kg dry wt.)] PCDD/F [ng I-TEQ/(kg dry wt.)] HBW-CP GW-CP HBW-CP GW-CP Organic contaminants IV nonstandard substances Contaminant [µg/(kg dry wt.)] HBW compost (N=1) GW compost (N=1) Median (min.; max.) Composted digestate of HBW-ADP (N=5) PCP 15 (< 5; 37) < 5 (< 5; 5) 15 (< 5; 9) Bisphenol A 33.5 (< 1; 99) 1.5 (< 1; 3) 53 (3; ) DEHP 1) 1.15 (<.5;.9). (<.5;.55) 1.7 (.9;.75) i-nonylphenol (< 5; 331) < 5 (< 5; 7) 3 (< 5; 1) Monobutyl tin.3 (< 1;.) < 1 (< 1;.). (3.; 19.7) Monooctyl tin < 1 (< 1; 5.) < 1 (< 1; < 1). (< 1; 1.) HHCB 13.7 (< 1;.3) 1.5 (< 1; 5.5). (1.7; 9.) AHTN.7 (3.; 1.1).1 (< 1; 7.7) 9. (.1; 1.) 1) [mg/(kg dry wt.)] 1 CH-Solothurn 7th 9th February /7

7 CODIS Summary Nearly all parameters detectable except: some tin-organics, thiabendazole, LAS, PFT, methyl-triclosan Concentrations mostly low except: Cu, Zn, PAH Contaminant level ranking: GW < HBW, HBW-ADP Temporal trends: inorganics behave ambiguously organics seemingly decreasing Report Schadstoffgehalte von Komposten und Vergärungsrückständen, Augsburg, CH-Solothurn 7th 9th February 7/7