title: Degradation of pentachlorophenol with the presence of fermentable and non-fermentable co-substrates in a microbial fuel cell.
abstract: Pentachlorophenol (PCP) was more rapidly degraded in acetate and glucose-fed microbial fuel cells (MFCs) than in open circuit controls, with removal rates of 0.12 ± 0.01 mg/Lh (14.8 ± 1.0 mg/g-VSS-h) in acetate-fed, and 0.08 ± 0.01 mg/L h (6.9 ± 0.8 mg/g-VSS-h) in glucose-fed MFCs, at an initial PCP concentration of 15 mg/L. A PCP of 15 mg/L had no effect on power generation from acetate but power production was decreased with glucose. Coulombic balances indicate the predominant product was electricity (16.1 ± 0.3%) in PCP-acetate MFCs, and lactate (19.8 ± 3.3%) in PCP-glucose MFCs. Current generation accelerated the removal of PCP and co-substrates, as well as the degradation products in both PCP-acetate and PCP-glucose reactors. While 2,3,4,5-tetrachlorophenol was present in both reactors, tetrachlorohydroquinone was only found in PCP-acetate MFCs. These results demonstrate PCP degradation and power production were affected by current generation and the type of electron donor provided.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Huang
authors.forename: Linlin
authors.initials: L
authors.lastname: Gan
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Zhao
authors.forename: Bruce E
authors.initials: BE
authors.lastname: Logan
authors.forename: Hong
authors.initials: H
authors.lastname: Lu
authors.forename: Guohua
authors.initials: G
authors.lastname: Chen
mesh_terms: D000085:Acetates; D001419:Bacteria / Q000378:metabolism*; D001674:Bioelectric Energy Sources; D002733:Chlorophenols; D005285:Fermentation; D005947:Glucose; D010416:Pentachlorophenol / Q000378:metabolism*
chemical_list: D000085:Acetates; D002733:Chlorophenols; C039674:2,3,4,5-tetrachlorophenate; D010416:Pentachlorophenol; D005947:Glucose