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Bioprocess and Biosystems Engineering

, Volume 31, Issue 4, pp 315–321 | Cite as

Simultaneous organics removal and bio-electrochemical denitrification in microbial fuel cells

  • Yu-Hong Jia
  • Hung-Thuan Tran
  • Dae-Hee Kim
  • Se-Jin Oh
  • Doo-Hyun Park
  • Rui-Hong Zhang
  • Dae-Hee Ahn
Original Paper

Abstract

Simultaneous organics removal and bio-electrochemical denitrification using a microbial fuel cell (MFC) reactor were investigated in this study. The electrons produced as a result of the microbial oxidation of glucose in the anodic chamber were transferred to the anode, which then flowed to the cathode in the cathodic chamber through a wire, where microorganisms used the transferred electrons to reduce the nitrate. The highest power output obtained on the MFCs was 1.7 mW/m2 at a current density of 15 mA/m2. The maximum volumetric nitrate removal rate was 0.084 mg NO3 –N cm−2 (electrode surface area) day−1. The coulombic efficiency was about 7%, which demonstrated that a substantial fraction of substrate was lost without current generation.

Keywords

Microbial fuel cell Microbial biocathode Denitrification Organic removal 

Notes

Acknowledgments

This subject is supported by Korea Ministry of Environment as “The Eco-technopia 21 project”.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Yu-Hong Jia
    • 1
  • Hung-Thuan Tran
    • 1
  • Dae-Hee Kim
    • 1
  • Se-Jin Oh
    • 1
  • Doo-Hyun Park
    • 2
  • Rui-Hong Zhang
    • 3
  • Dae-Hee Ahn
    • 1
  1. 1.Department of Environmental Engineering and BiotechnologyMyongji UniversityKyonggidoRepublic of Korea
  2. 2.Department of Biological EngineeringSeokyeong UniversitySeoulRepublic of Korea
  3. 3.Department of Biological and Agricultural EngineeringUniversity of California, DavisDavisUSA

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