[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 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 the coulomb efficiency was about 10.6%.
Liang
Peng
P
Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. liangpeng@tsinghua.edu.cn
Fan
Ming-zhi
MZ
Cao
Xiao-xin
XX
Huang
Xia
X
Huang
Zheng-hong
ZH
Wang
Cheng
C
D001419:Bacteria / Q000166:cytology / Q000378:metabolism*; D001674:Bioelectric Energy Sources; D004560:Electricity; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*
D012722:Sewage