Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Power Density Enhancement of Anion-Exchange Membrane-Installed Microbial Fuel Cell Under Bicarbonate-Buffered Cathode Condition

  • Piao, Jingmei (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • An, Junyeong (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Ha, Phuc Thi (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Kim, Taeyoung (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST)) ;
  • Jang, Jae Kyung (Energy and Environmental Engineering Division, National Institute of Agricultural Science, Rural Development Administration) ;
  • Moon3, Hyunsoo (School of Biological and Chemical Engineering, Yanbian University of Science and Technology) ;
  • Chang, In Seop (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST))
  • Received : 2012.11.06
  • Accepted : 2012.11.20
  • Published : 2013.01.28
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Abstract

We introduce a high-performance microbial fuel cell (MFC) that was operated using a 0.1M bicarbonate buffer as the cathodic electrolyte. The MFC had a 136.42 $mW/m^2$ maximum power density under continuous feeding of 5 mM acetate as fuel. Results of the electrode potential measurements showed that the cathode potential of the bicarbonate-buffered condition was higher than the phosphate-buffered condition, although the phosphate condition had less interfacial resistance between the membrane and electrolyte. Therefore, we posit here that the increased power of the bicarbonate-buffered MFC may be caused by the higher cathode potential rather than by the interfacial membrane-electrolyte resistance.

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References

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