title: Effects of various organic carbon sources on simultaneous V(V) reduction and bioelectricity generation in single chamber microbial fuel cells.
abstract: Four ordinary carbon sources affecting V(V) reduction and bioelectricity generation in single chamber microbial fuel cells (MFCs) were investigated. Acetate supported highest maximum power density of 589.1mW/m(2), with highest V(V) removal efficiency of 77.6% during 12h operation, compared with glucose, citrate and soluble starch. Exorbitant initial V(V) concentration led to lower V(V) removal efficiencies and power outputs. Extra addition of organics had little effect on the improvement of MFCs performance. V(V) reduction and bioelectricity generation were enhanced and then suppressed by the increase of conductivity. The larger the external resistance, the higher the V(V) removal efficiencies and voltage outputs. High-throughput 16S rRNA gene pyrosequencing analysis implied the accumulation of Enterobacter which had the capabilities of V(V) reduction, electrochemical activity and fermentation, accompanied with other functional species as Pseudomonas, Spirochaeta, Sedimentibacter and Dysgonomonas. This study steps forward to remediate V(V) contaminated environment based on MFC technology.
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. 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: Chuanping
authors.initials: C
authors.lastname: Feng
mesh_terms: D000085:Acetates / Q000737:chemistry; D001419:Bacteria / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D001674:Bioelectric Energy Sources; D002244:Carbon / Q000737:chemistry*; D002951:Citrates / Q000737:chemistry; D052918:Environmental Restoration and Remediation / Q000379:methods*; D005285:Fermentation; D005947:Glucose / Q000737:chemistry; D010084:Oxidation-Reduction; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012989:Soil Pollutants / Q000737:chemistry*; D013213:Starch / Q000737:chemistry; D014639:Vanadium / Q000737:chemistry*
chemical_list: D000085:Acetates; D002951:Citrates; D012336:RNA, Ribosomal, 16S; D012989:Soil Pollutants; D014639:Vanadium; D002244:Carbon; D013213:Starch; D005947:Glucose
keywords: Bioelectricity; Microbial fuel cells; Organic carbon sources; Vanadium(V)