Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
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Optimal Metal Dose of Alternative Cathode Catalyst Considering Organic Substances in Single Chamber Microbial Fuel Cells

  • Nam, Joo-Youn (Jeju Global Research Center, Korea Institute of Energy Research) ;
  • Moon, Chungman (Department of Civil and Environmental Engineering, Center for Engineering Innovation, University of Windsor) ;
  • Jeong, Emma (Department of Civil Engineering, McGill University) ;
  • Lee, Won-Tae (School of Civil and Environmental Engineering, Kumoh National Institute of Technology) ;
  • Shin, Hang-Sik (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Hyun-Woo (Green Technology Center, Korea Institute of Industrial Technology)
  • Received : 2012.11.15
  • Accepted : 2013.05.08
  • Published : 2013.09.30
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Abstract

Optimal preparation guidelines of a cathode catalyst layer by non-precious metal catalysts were evaluated based on electrochemical performance in single-chamber microbial fuel cells (MFCs). Experiments for catalyst loading rate revealed that iron(II) phthalocyanine (FePc) can be a promising alternative, comparable to platinum (Pt) and cobalt tetramethoxyphenylporphyrin (CoTMPP), including effects of substrate concentration. Results showed that using an optimal FePc loading of $1mg/cm^2$ was equivalent to a Pt loading of $0.35mg/cm^2$ on the basis of maximum power density. Given higher loading rates or substrate concentrations, FePc proved to be a better alternative for Pt than CoTMPP. Under the optimal loading rate, it was further revealed that 40 wt% of FePc to carbon support allowed for the best power generation. These results suggest that proper control of the non-precious metal catalyst layer and substrate concentration are highly interrelated, and reveal how those combinations promote the economic power generation of single-chamber MFCs.

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References

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