Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
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Electric power generation from treatment of food waste leachate using microbial fuel cell

  • Wang, Ze Jie (Department of Environmental Engineering, Daejeon University) ;
  • Lim, Bong Su (Department of Environmental Engineering, Daejeon University)
  • Received : 2016.05.01
  • Accepted : 2016.11.21
  • Published : 2017.06.30
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Abstract

Simultaneous treatment of food waste leachate and power generation was investigated in an air-cathode microbial fuel cell. A TCOD removal efficiency of $95.4{\pm}0.3%$ was achieved for an initial COD concentration of 2,860 mg/L. Maximum power density ranged was maximized at $1.86W/m^3$, when COD concentration varied between 60 mg/L and 2,860 mg/L. Meanwhile, columbic efficiency was determined between 1.76% and 11.07% for different COD concentrations. Cyclic voltammetric data revealed that the oxidation peak voltage occurred at -0.20 V, shifted to about -0.25 V. Moreover, a reduction peak voltage at -0.45 V appeared when organic matters were exhausted, indicating that reducible matters were produced during the decomposition of organic matters. The results showed that it was feasible to use food waste leachate as a fuel for power generation in a microbial fuel cell, and the treatment efficiency of the wastewater was satisfied.

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References

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