title: Spontaneous arsenic (III) oxidation with bioelectricity generation in single-chamber microbial fuel cells.
abstract: Arsenic is one of the most toxic elements commonly found in groundwater. With initial concentration of 200μgL(-1), spontaneous As(III) oxidation is realized completely during 7 days operation in single-chamber microbial fuel cells (MFCs) in the present study, with the maximum power density of 752.6±17mWm(-2). The product is less toxic and mobile As(V), which can be removed from aqueous solution more easily. High-throughput 16S rRNA gene pyrosequencing analysis indicates the existence of arsenic-resistant bacteria as Actinobacteria, Comamonas, Pseudomonas and arsenic-oxidizing bacteria as Enterobacter, with electrochemically active bacteria as Lactococcus, Enterobacter. They interact together and are responsible for As(III) oxidation and bioelectricity generation in MFCs. This study offers a potential attractive method for remediation of arsenic-polluted groundwater.
authors.affiliation: School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China; Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing 100083, China.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China; Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing 100083, China. Electronic address: zbgcugb@gmail.com.
authors.forename: Baogang
authors.initials: B
authors.lastname: Zhang
authors.affiliation: School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China; Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing 100083, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Cheng
authors.affiliation: School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China; Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing 100083, China.
authors.forename: Yalong
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China; Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing 100083, China.
authors.forename: Liting
authors.initials: L
authors.lastname: Hao
authors.affiliation: School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China; Key Laboratory of Groundwater Circulation and Evolution (China University of Geosciences Beijing), Ministry of Education, Beijing 100083, China.
authors.forename: Huaming
authors.initials: H
authors.lastname: Guo
mesh_terms: D000693:Anaerobiosis; D001151:Arsenic / Q000378:metabolism*; D001419:Bacteria / Q000235:genetics / Q000378:metabolism; D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources; D004269:DNA, Bacterial / Q000235:genetics; D004560:Electricity; D010084:Oxidation-Reduction; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S; D014874:Water Pollutants, Chemical; D001151:Arsenic
keywords: Arsenic; Bioelectricity; Groundwater; Microbial fuel cells