Electricity generation using the packing-type microbial fuel cells

The packing-type microbial fuel cells (MFCs) were constructed using the granular graphite and the carbon felt as packing materials. The start-up time of the packing-type MFC was about 1 d, which was lower than that of the flat-type MFC. The maximal power density (Pm) of the MFC with carbon felt as p...

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Bibliographic Details
Published inHuanjing kexue Vol. 29; no. 2; p. 512
Main Authors Liang, Peng, Fan, Ming-zhi, Cao, Xiao-xin, Huang, Xia, Huang, Zheng-hong, Wang, Cheng
Format Journal Article
LanguageChinese
Published China 01.02.2008
Subjects
Bacteria - cytology
Bacteria - metabolism
Bioelectric Energy Sources
Electricity
Sewage - chemistry
Sewage - microbiology
Waste Disposal, Fluid - instrumentation
Waste Disposal, Fluid - methods
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Summary:The packing-type microbial fuel cells (MFCs) were constructed using the granular graphite and the carbon felt as packing materials. The start-up time of the packing-type MFC was about 1 d, which was lower than that of the flat-type MFC. The maximal power density (Pm) of the MFC with carbon felt as packing material was 1502 mW/m2 (37.6 W/m3), which was higher than that with granular graphite as packing material. The carbon felt and carbon paper were sintered together to enhance the electric conductivity. Compared with the flat-type MFC, the area-specific resistance of the packing-type MFC decreased from 0.071 omega x m2 to 0.051 omega x m2, the maximal current density increased from 3000 mA to 8000 mA, the Pm increased from 1100 mW/m2 (27.5 W/m3) to 2426 mW/m2 (60.7 W/m3) and the potentials of anode decreased about 100 mV. The flow rate affected the power generation of the MFC. When the flow rate was lower than 1 mL/min, the Pm dropped with the flux decreasing. The packing-type MFC was operated for over 30 and
ISSN:0250-3301