title: Dechlorination of polychlorinated biphenyl-contaminated soil via anaerobic composting with pig manure.
abstract: Anaerobic dechlorination is an effective degradation pathway of higher chlorinated polychlorinated biphenyls (PCBs). The efficiency of anaerobic composting remediation of PCB-contaminated soil using pig manure was determined. The results show that the dechlorination of PCB-contaminated soil via anaerobic composting with pig manure is feasible. PCB concentration is the most critical factor. Elevated PCB concentrations can inhibit dechlorination but does not disrupt the anaerobic fermentation process. At 1 mg kg(-1) PCBs, the degradation rate of five or more chlorinated biphenyls is 43.8%. The highest dechlorination performance in this experiment was obtained when the soil-to-organic waste ratio, carbon-to-nitrogen ratio, moisture content, and PCB concentration were 2:3, 20, 60%, and 1 mg kg(-1), respectively.
authors.affiliation: Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China; Zhejiang Environmental Science & Design Institute, Hangzhou, 310007, China.
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.forename: Yao
authors.initials: Y
authors.lastname: Du
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Tao
authors.forename: Kun
authors.initials: K
authors.lastname: Zhang
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Shen
authors.forename: Yu-Yang
authors.initials: YY
authors.lastname: Long
mesh_terms: D000641:Ammonia / Q000378:metabolism; D000693:Anaerobiosis; D000818:Animals; D002244:Carbon / Q000378:metabolism; D002713:Chlorine / Q000378:metabolism*; D005232:Fatty Acids, Volatile / Q000378:metabolism; D008372:Manure / Q000382:microbiology*; D009584:Nitrogen / Q000378:metabolism; D011078:Polychlorinated Biphenyls / Q000378:metabolism*; D012989:Soil Pollutants / Q000378:metabolism*; D013552:Swine
chemical_list: D005232:Fatty Acids, Volatile; D008372:Manure; D012989:Soil Pollutants; D002713:Chlorine; D002244:Carbon; D000641:Ammonia; D011078:Polychlorinated Biphenyls; D009584:Nitrogen
keywords: Anaerobic; Composting; Dechlorination; Pig manure; Polychlorinated biphenyl