title: Enhancing biomethanogenic treatment of fresh incineration leachate using single chambered microbial electrolysis cells.
abstract: Methanogenic treatment of municipal solid waste (MSW) incineration leachate can be hindered by high concentrations of refractory organic matter and humification of compounds in the leachate. In an attempt to overcome some of these impediments, microbial electrolysis cells (MECs) were incorporated into anaerobic digesters (ADMECs). COD removal efficiencies and methane production were 8.7% and 44.3% higher in ADMECs than in controls, and ADMEC reactors recovered more readily from souring caused by high organic loading rates. The degradation rate of large macromolecules was substantially higher (96% vs 81%) in ADMEC than control effluent, suggesting that MECs stimulated degradation of refractory organic matter and reduced humification. Exoelectrogenic bacteria and microorganisms known to form syntrophic partnerships were enriched in ADMECs. These results show that ADMECs were more effective at treatment of MSW incineration leachate, and should be taken into consideration when designing future treatment facilities.
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Dezhi
authors.initials: D
authors.lastname: Sun
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China. Electronic address: dangyan.p@gmail.com.
authors.forename: Yan
authors.initials: Y
authors.lastname: Dang
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Yuqing
authors.initials: Y
authors.lastname: Lei
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Jiayang
authors.initials: J
authors.lastname: Ji
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Tingwei
authors.initials: T
authors.lastname: Lv
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Bian
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Xiao
authors.affiliation: Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
authors.forename: Liangming
authors.initials: L
authors.lastname: Yan
authors.affiliation: Department of Physical and Biological Sciences, Western New England University, 1215 Wilbraham Rd, Springfield, MA 01119, United States.
authors.forename: Dawn E
authors.initials: DE
authors.lastname: Holmes
mesh_terms: D001105:Archaea / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism; D001674:Bioelectric Energy Sources; D018441:Biofilms; D019149:Bioreactors / Q000382:microbiology; D002681:China; D004566:Electrodes; D004572:Electrolysis; D005232:Fatty Acids, Volatile / Q000032:analysis; D017745:Incineration; D008697:Methane / Q000096:biosynthesis*; D008970:Molecular Weight; D009930:Organic Chemicals / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000382:microbiology; D062611:Solid Waste / Q000032:analysis*; D012995:Solubility; D014865:Waste Disposal, Fluid
chemical_list: D005232:Fatty Acids, Volatile; D009930:Organic Chemicals; D012722:Sewage; D062611:Solid Waste; D008697:Methane
keywords: Exoelectrogens; Incineration leachate; Methanogenesis; Microbial electrolysis cells; Refractory organic matter degradation