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Long-term effect of set potential on biocathodes in microbial fuel cells: electrochemical and phylogenetic characterization.
Bioresour Technol. 2012 Sep; 120:26-33.BT

Abstract

The long-term effect of set potential on oxygen reducing biocathodes was investigated in terms of electrochemical and biological characteristics. Three biocathodes were poised at 200, 60 and -100 mV vs. saturated calomel electrode (SCE) for 110 days, including the first 17 days for startup. Electrochemical analyses showed that 60 mV was the optimum potential during long-term operation. The performance of all the biocathodes kept increasing after startup, suggesting a period longer than startup time needed to make potential regulation more effective. The inherent characteristics without oxygen transfer limitation were studied. Different from short-term regulation, the amounts of biomass were similar while the specific electrochemical activity was significantly influenced by potential. Moreover, potential showed a strong selection for cathode bacteria. Clones 98% similar with an uncultured Bacteroidetes bacterium clone CG84 accounted for 75% to 80% of the sequences on the biocathodes that showed higher electrochemical activity (60 and -100 mV).

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Authors+Show Affiliations

Xia X
State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
Sun Y
No affiliation info available
Liang P
No affiliation info available
Huang X
No affiliation info available

MeSH

AerobiosisBacteriaBioelectric Energy SourcesBiofilmsBiomassElectricityElectrochemical TechniquesElectrodesMolecular Sequence DataOxygenPhylogenySolubilityTime Factors

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22784950

Citation

Xia, Xue, et al. "Long-term Effect of Set Potential On Biocathodes in Microbial Fuel Cells: Electrochemical and Phylogenetic Characterization." Bioresource Technology, vol. 120, 2012, pp. 26-33.
Xia X, Sun Y, Liang P, et al. Long-term effect of set potential on biocathodes in microbial fuel cells: electrochemical and phylogenetic characterization. Bioresour Technol. 2012;120:26-33.
Xia, X., Sun, Y., Liang, P., & Huang, X. (2012). Long-term effect of set potential on biocathodes in microbial fuel cells: electrochemical and phylogenetic characterization. Bioresource Technology, 120, 26-33. https://doi.org/10.1016/j.biortech.2012.06.017
Xia X, et al. Long-term Effect of Set Potential On Biocathodes in Microbial Fuel Cells: Electrochemical and Phylogenetic Characterization. Bioresour Technol. 2012;120:26-33. PubMed PMID: 22784950.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Long-term effect of set potential on biocathodes in microbial fuel cells: electrochemical and phylogenetic characterization. AU - Xia,Xue, AU - Sun,Yanmei, AU - Liang,Peng, AU - Huang,Xia, Y1 - 2012/06/16/ PY - 2012/04/27/received PY - 2012/06/09/revised PY - 2012/06/09/accepted PY - 2012/7/13/entrez PY - 2012/7/13/pubmed PY - 2012/12/12/medline SP - 26 EP - 33 JF - Bioresource technology JO - Bioresour Technol VL - 120 N2 - The long-term effect of set potential on oxygen reducing biocathodes was investigated in terms of electrochemical and biological characteristics. Three biocathodes were poised at 200, 60 and -100 mV vs. saturated calomel electrode (SCE) for 110 days, including the first 17 days for startup. Electrochemical analyses showed that 60 mV was the optimum potential during long-term operation. The performance of all the biocathodes kept increasing after startup, suggesting a period longer than startup time needed to make potential regulation more effective. The inherent characteristics without oxygen transfer limitation were studied. Different from short-term regulation, the amounts of biomass were similar while the specific electrochemical activity was significantly influenced by potential. Moreover, potential showed a strong selection for cathode bacteria. Clones 98% similar with an uncultured Bacteroidetes bacterium clone CG84 accounted for 75% to 80% of the sequences on the biocathodes that showed higher electrochemical activity (60 and -100 mV). SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/22784950/Long_term_effect_of_set_potential_on_biocathodes_in_microbial_fuel_cells:_electrochemical_and_phylogenetic_characterization_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(12)00921-2 DB - PRIME DP - Unbound Medicine ER -