Design and performance of a sediment microbial fuel cell (SMFC) with floating-biocathode
For a long time,chemical catalyst has been used for the cathode in microbial fuel cells (MFCs) generally.However,the cost and pollution problem can not be neglected.Currently,the application of biocathode in the MFCs has gotten a great development,which can achieve a similar performance as the chemical catalyst.Here we present a novel floating-biocathode applied on the sediment microbial fuel cell (SMFC). A foam box filled with graphite granular was set floating on the water surface as the cathode,while the graphite granular was embedded under the river sediment as the anode.In the labscale experiment,after lOdays running,the system can get a stable output voltage over 600mV (external resistance 1000Ω) which was 110mV higher than using the carbon paper cathode coating 0.5mg/cm~2 (the same projection area as the floating-biocathode) and 300mV higher than using the identical cathode treated by 2.5% glutaraldehyde.We also compared the system performance under the conditions of surface aeration and non-aeration.It was found that the maximum power production with pumping air was 1.1 w/m3 (anode total volume),1.2-fold greater than the value without pumping. Overall,the floating-biocathode can has a better application prospect on both the contaminative sediment resource and organic matter control than the conventional cathode owning to the low cost and comparable performance.
Microbial fuel cell Biocathode Sediment electricity generation recalcitrant organic removal
A.J.Wang H.Y.Cheng N.Q.Ren D.Cui
State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology (SKLUWRE,HIT),Harbin 150090,China
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
56-59
2009-11-13（万方平台首次上网日期，不代表论文的发表时间）