Electricity production by an overflow-type wetted-wall microbial fuel cell.
An overflow-type wetted-wall MFC (WWMFC) was developed to generate a stable voltage from acetate-based substrates. The maximum power density of 18.21 W/m(3) was obtained. The power generation showed a saturation-type relationship as a function of initial COD, with a maximum power density (P(max)) of 18.82 W/m(3) and a saturation constant (K(s)) of 227.4 mg/l. Forced air flowing through the cathode chamber had a negligible effect on power generation. Influent flow rate could greatly affect the power generation. The maximum power density was increased by 72.8% when the influent flow rate increased from 5 to 30 ml/min. In addition, increasing ionic strength did not affect the power density and internal resistance. Oxygen could be restrained to diffuse into the anode chamber effectively in the overflow-type WWMFC. And the overflow-type WWMFC could be scaled up conveniently in practical application.
Li
Zhongjian
Z
Institute of Environmental Pollution Control Technologies, Xixi campus, Zhejiang University, Hangzhou 310028, PR China.
Zhang
Xingwang
X
Zeng
Yuxuan
Y
Lei
Lecheng
L
D001421:Bacteria, Anaerobic / Q000378:metabolism; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D019149:Bioreactors; D004560:Electricity; D004566:Electrodes; D004867:Equipment Design; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D012722:Sewage / Q000382:microbiology; D019346:Sodium Acetate / Q000737:chemistry; D014865:Waste Disposal, Fluid
D012722:Sewage; D019346:Sodium Acetate; D010100:Oxygen