Checking graphite and stainless anodes with an experimental model of marine microbial fuel cell

被引:77
作者
Dumas, Claire [1 ]
Mollica, Alfonso [2 ]
Feron, Damien [3 ]
Basseguy, Regine [1 ]
Etcheverry, Luc [1 ]
Bergel, Alain [1 ]
机构
[1] CNRS, INPT, Lab Genie Chim, F-31106 Toulouse, France
[2] CNR, ISMAR, I-16149 Genoa, Italy
[3] CEA Saclay, SCCME, F-91191 Gif Sur Yvette, France
关键词
Microbial fuel cell; Stainless steel; Sediments; Impedance spectroscopy;
D O I
10.1016/j.biortech.2008.04.054
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
A procedure was proposed to mimic marine microbial fuel cell (MFC) in liquid phase. A graphite anode and a stainless steel cathode which have been proven, separately, to be efficient in MFC were investigated. A closed anodic compartment was inoculated with sediments, filled with deoxygenated seawater and fed with milk to recover the sediment's sulphide concentration. A stainless steel cathode, immersed in aerated seawater, used the marine biofilm formed on its surface to catalyze oxygen reduction. The cell implemented with a 0.02 m(2-)graphite anode supplied around 0.10 W/m(2) for 45 days. A power of 0.02 W/m(2) was obtained after the anode replacement by a 0.06 m(2)-stainless steel electrode. The cell lost its capacity to make a motor turn after one day of operation, but recovered its full efficiency after a few days in open circuit. The evolution of the kinetic properties of stainless steel was identified as responsible for the power limitation. (C) 2008 Elsevier Ltd. All rights reserved.
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页码:8887 / 8894
页数:8
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