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Two typical oxidized-status metals (Fe(III) and Cr(VI)) were studied as electron acceptors on cathodes in single chamber microbial fuel cells (SCMFCs) to explore novel sustainable technology for metal treatment. The batch-mode tests indicated that the voltages of SCMFCs steadily increased with Fe(III) concentrations (10, 30, and 50 mg L―1) and Cr(VI) concentrations (1, 3, and 10 mg L―1). The maximum power density was 658 ± 6 mW m―2 at 50 mg L―1 of Fe(III), and 419 ± 4 mW m―2 at 10 mg L―1 Cr(VI). The conversion efficiency of Cr(VI) and FE(III) were high (>89%), and coulombic efficiency ranged 23―100%. Cr(VI) concentration of 10 mg L―1 started to irreversibly inhibit SCMFCs. The open circuit potentials (OCPs) well reflected the organic substrate removal in anode and metal reduction on cathode. Cathode liner sweep voltammetry (LSV) showed the electrochemical activity increased with metal concentrations, and the cathode of Fe(III) had better LSV performance than Cr(VI). Microbial community analysis of biofilms showed that the DNA band patterns of anode biofilms were similar, while cathode biofilms varied with electron acceptors. This study demonstrated the high power generation of SCMFCs with metals as electron acceptors, and revealed the great potential of expanding MFCs for diverse waste treatment.

Titel:	Metals as electron acceptors in single-chamber microbial fuel cells
Autor/in / Beteiligte Person:	YAN, LI ; YINING, WU ; PURANIK, Sampada ; YU, LEI ; VADAS, Timothy ; BAIKUN, LI
Link:	E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Journal of power sources (Print), Jg. 269 (2014), S. 430-439
Veröffentlichung:	Amsterdam: Elsevier, 2014
Medientyp:	academicJournal
Umfang:	print, 59 ref
ISSN:	0378-7753 (print)
Schlagwort:	Electrical engineering Electrotechnique Energy Énergie Sciences exactes et technologie Exact sciences and technology Sciences appliquees Applied sciences Electrotechnique. Electroenergetique Electrical engineering. Electrical power engineering Electroénergétique Electrical power engineering Conversion directe et accumulation d'énergie Direct energy conversion and energy accumulation Conversion électrochimique: piles et accumulateurs électrochimiques, piles à combustibles Electrochemical conversion: primary and secondary batteries, fuel cells Energie Energie. Utilisation thermique des combustibles Energy. Thermal use of fuels Appareils de production et de conversion d'énergie: énergie thermique, énergie électrique, énergie mécanique, etc Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Piles à combustible Fuel cells Accepteur électron Electron acceptor Aceptor electrón DNA Métal Metal Pile combustible biochimique Biochemical fuel cell Pila combustible bioquímica Production énergie électrique Electric power production Producción energía eléctrica Production énergie Power production Producción energía Réduction chimique Chemical reduction Reducción química Voltammétrie Voltammetry Voltametría Liner sweep voltammetry Metal reduction Power generation Random amplified polymorphic DNA Single chamber microbial fuel cells
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Department of Civil and Environmental Engineering, University of Connecticut, Storrs, CT, 06269, United States ; School of Environmental Engineering, Harbin Institute of Technology, Harbin, 150001, China ; Environmental Genomics Division, National Environmental Engineering Research Institute, Nagpur, 440020, India ; Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, 06269, United States Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Electrical engineering. Electroenergetics ; Energy

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Metals as electron acceptors in single-chamber microbial fuel cells