Increase of Power Output using Floating-Type MFC (FT-MFC) Combined with Sediment MFC (SMFC): Three Electrodes Microbial Fuel Cell (TE-MFC)
The objective of this study is to examine the possibility of the higher current generation using three electrodes microbial fuel cell (TE-MFC) than that produced by individual operation of SMFC and FT-MFC from organic-contaminated water system. A FT-MFC consisted of only two electrodes (anode and cathode) without a membrane and anodic compartment. Then,an anode of FT-MFC was connected with an anode electrode of SMFC; one of the three electrodes was embedded in sediment,and two electrodes were overlaid in water phase-on the water surface layer and in the middle of the water column,respectively—-configuring SMFC and FT-MFC by the three electrodes vertically installed.When 5 mM acetate was applied to the TE-MFC system,the current production pattern (ranging from 0.08 to 0.1 mA) was similar with that of FT-MFC (0.1 mA).In contrast,SMFC showed no current generation due to the DO concentration (almost zero ppm) through the entire water layer.While the acetate concentration was converted from 3 to 1 mM,the maximum current produced by TE-MFC (0.28 mA) was higher than those generated individually by SMFC and FT-MFC (0.15 and 0.15 mA,respectively).Continuous feeding of 1 mM acetate,however,led to the decrease of the current produced by TE-MFC (20 μA) and FT-MFC (0.5 μA) due to the depletion of the substrate transferring to the electrode located in water phase (middle electrode). The results in this study imply that 1) TE-MFC,the combination of the FT-MFC with a SMFC,works 2) and the electrode placed in the middle of water column is adaptive as the both an anode or cathode of the TE-MFC depending on the organic concentration in water phase.
Microbial fuel cell (MFC) floating-type microbial fuel cell (FT-MFC) sediment microbial fuel cell (SMFC)
Junyeong An·In Seop Chang
Department of Environmental Science and Engineering,Gwangju Institute of Science and Technology(GIST),261 Cheom-dan Gwagi-ro,Buk-gu,Gwangju 500-712,Korea
国际会议
第二届中国微生物燃料电池研讨会(The 2nd Symposium on Microbial Fuel Cell in China)
北京
英文
28-30
2009-11-13（万方平台首次上网日期，不代表论文的发表时间）