A biofilm enhanced miniature microbial fuel cell using Shewanella oneidensis DSP10 and oxygen reduction cathodes
A biofilm enhanced miniature microbial fuel cell using Shewanella oneidensis DSP10 and oxygen reduction cathodes
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DOI：
10.1016/j.bios.2006.07.027
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发表时间：
2007-03-15
影响因子：
12.6
通讯作者：
Ringeisen, Bradley R.
中科院分区：
文献类型：
--
作者：
Biffinger, Justin C.;Pietron, Jeremy;Ringeisen, Bradley R.
使用微型微生物燃料电池（mini-MFC，室体积：1.2mL）来监测在最小营养条件下来自石墨毡（GF）上的希瓦氏菌（Shewanella oneidensis）DSP 10的纯培养物的生物膜发展。当使用非细胞基本培养基阳极电解液（1500 mW/m2）时，GF上生物膜形成的ESEM证据得到了来自mini-MFC的大量功率密度（每个器械横截面）的支持。这些实验表明，生物膜流动反应器MFC的每体积功率密度应单独使用阳极室体积（250 W/m3）计算，而不是使用全部阳极电解液体积计算。还将两种氧还原阴极（未涂覆的GF或GF上的Pt/硫化碳涂层）与使用未涂覆的GF和50 mM铁氰化物阴极电解质溶液的阴极进行比较。在该设计中，具有DSPIO的液体培养物的Pt/C-GF（按质量计2-4% Pt）电极产生比裸石墨毡（12 W/m3）大一个数量级的功率密度（150 W/m3）。这些进步是使微型MFC能够用于实时、长期环境发电情况所需的一些修改。(c)2006 Elsevier B. V.保留所有权利。
A miniature-microbial fuel cell (mini-MFC, chamber volume: 1.2 mL) was used to monitor biofilm development from a pure culture of Shewanella oneidensis DSP10 on graphite felt (GF) under minimal nutrient conditions. ESEM evidence of biofilm formation on GF is supported by substantial power density (per device cross-section) from the mini-MFC when using an acellular minimal media anolyte (1500 mW/m(2)) . These experiments demonstrate that power density per volume for a biofilm flow reactor MFC should be calculated using the anode chamber volume alone (250 W/m(3)), rather than with the full anolyte volume. Two oxygen reduction cathodes (uncoated GF or a Pt/vulcanized carbon coating on GF) were also compared to a cathode using uncoated GF and a 50 mM ferricyanide catholyte solution. The Pt/C-GF (2-4% Pt by mass) electrodes with liquid cultures of DSPIO produced one order of magnitude larger power density (150 W/m(3)) than bare graphite felt (12 W/m(3)) in this design. These advances are some of the required modifications to enable the mini-MFC to be used in real-time, long-term environmental power generating situations. (c) 2006 Elsevier B.V. All rights reserved.