Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Effect of Ammonium and Nitrate on Current Generation Using Dual-Cathode Microbial Fuel Cells

  • Jang, Jae-Kyung (Energy and Environmental Engineering Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Choi, Jung-Eun (Energy and Environmental Engineering Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ryou, Young-Sun (Energy and Environmental Engineering Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Sung-Hyoun (Energy and Environmental Engineering Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Eun-Young (Department of Environmental Energy Engineering, The University of Suwon)
  • Received : 2011.10.13
  • Accepted : 2011.11.01
  • Published : 2012.02.28
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Abstract

These studies were conducted to determine the effects of various concentrations of ammonium and nitrate on current generation using dual-cathode microbial fuel cells (MFCs). Current generation was not affected by ammonium up to $51.8{\pm}0.0$ mg/l, whereas $103.5{\pm}0.0$ mg/l ammonium chloride reduced the current slightly. On the other hand, when $60.0{\pm}0.0$ and $123.3{\pm}0.1$ mg/l nitrate were supplied, the current was decreased from $10.23{\pm}0.07$ mA to $3.20{\pm}0.24$ and $0.20{\pm}0.01$ mA, respectively. Nitrate did not seem to serve as a fuel for current generation in these studies. At this time, COD and nitrate removal were increased except at $123{\pm}0.1$ mg ${NO_3}^-/l$. These results show that proper management of ammonium and nitrate is very important for increasing the current in a microbial fuel cell.

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References

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