Abstract
An electrogenic bacterium, named Citrobacter freundii Z7, was isolated from the anodic biofilm of microbial fuel cell (MFC) inoculated with aerobic sewage sludge. Cyclic voltammetry (CV) analysis exhibited that the strain Z7 had relatively high electrochemical activity. When the strain Z7 was inoculated into MFC, the maximum power density can reach 204.5 mW/m2 using citrate as electron donor. Series of substrates including glucose, glycerol, lactose, sucrose, and rhammose could be utilized to generate power. CV tests and the addition of anode solution as well as AQDS experiments indicated that the strain Z7 might transfer electrons indirectly via secreted mediators.
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This study was financially supported by National Natural Science Foundation of China (30800796 and 31272482), the Fundamental Research Funds for the Central Universities (2014ZG015), and the Program for New Century Excellent Talents in University (NCET-11-0166).
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Huang, J., Zhu, N., Cao, Y. et al. Exoelectrogenic Bacterium Phylogenetically Related to Citrobacter freundii, Isolated from Anodic Biofilm of a Microbial Fuel Cell. Appl Biochem Biotechnol 175, 1879–1891 (2015). https://doi.org/10.1007/s12010-014-1418-9
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DOI: https://doi.org/10.1007/s12010-014-1418-9