Environmental Engineering Research

  • 제25권2호
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  • Pages.238-242
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  • 2020
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Electric power generation from sediment microbial fuel cells with graphite rod array anode

  • Wang, Zejie (College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences)) ;
  • Lim, Bongsu (Department of Environmental Engineering, Daejeon University)
  • 투고 : 2018.10.15
  • 심사 : 2019.03.20
  • 발행 : 2020.04.30
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초록

Sediment microbial fuel cells (SMFCs) illustrated great potential for powering environmental sensors and bioremediation of sediments. In the present study, array anodes for SMFCs were fabricated with graphite rods as anode material and stainless steel plate as electric current collector to make it inconvenient to in situ settle down and not feasible for large-scale application. The results demonstrated that maximum power of 89.4 ㎼ was obtained from three graphite rods, twice of 43.3 ㎼ for two graphite rods. Electrochemical impedance spectroscopy revealed that three graphite rods resulted in anodic resistance of 61.2 Ω, relative to 76.0 Ω of two graphite rods. It was probably caused by the parallel connection of the graphite rods, as well as more biomass which could reduce the charge transfer resistance of the biofilm anode. The presently designed array configuration possesses the advantages of easy to enlarge the surface area, decrease in anodic resistance because of the parallel connection of each graphite rod, and convenience to berry into sediment by gravity. Therefore, the as prepared array node would be an effective method to fabricate large-scale SMFC and make it easy to in situ applicate in natural sediments.

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참고문헌

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