A microbial fuel cell using permanganate as the cathodic electron acceptor
A microbial fuel cell using permanganate as the cathodic electron acceptor
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以高锰酸盐为阴极电子受体的微生物燃料电池
DOI：
10.1016/j.jpowsour.2006.07.063
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发表时间：
2006-11-22
影响因子：
9.2
通讯作者：
Zhao, Shiqi
中科院分区：
文献类型：
--
作者：
You, Shijie;Zhao, Qingliang;Zhao, Shiqi
微生物燃料电池（MFC）被证明是一种能够从有机物中回收电能的新型生物过程。在这项研究中，我们报告说，通过使用高锰酸盐作为MFC的阴极电子受体，我们实际上能够回收比使用其他现有类型的电子受体多得多的电功率，例如，使用高锰酸盐作为双室MFC的阴极电子受体产生115.60 mWm（-2）的最大功率密度，分别为，比以六氰合铁酸盐（25.62 mW m（-2））和氧气（10.2 mW m（-2））为阴极电子受体时的产率分别高4.5和11.3倍。这可归因于MFC中高锰酸盐提供的较高开路电位（OCP）。此外，pH值，不像高锰酸盐浓度，进一步发现有一个主要影响的OCP和阴极电位。SEM和XPS分析表明，二氧化锰（MnO 2）实际上是高锰酸盐在pH 3.6的主要还原产物。此外，与双室MFC相比，使用高锰酸盐作为阴极电子受体的套管MFC实现了前所未有的最大功率输出3986.72 mW m（-2）。本研究首次表明高锰酸盐可以作为MFC的阴极电子受体。(c)2006 Elsevier B. V.保留所有权利。
The microbial fuel cell (MFC) was proved to be a novel bioprocess capable of recovering electrical energy from organic matter. In this study, we report that by using permanganate as the cathodic electron acceptor for a MFC we were actually able to recover much more electrical power than using other existing types of electron acceptors, e.g. using permanganate as the cathodic electron acceptor for a two-chamber MFC generated a maximum power density of 115.60 mWm(-2) which was, respectively, 4.5- and 11.3-fold higher than that produced by using hexacynoferrate (25.62 mW m(-2)) and oxygen (10.2 mW m(-2)) as the cathodic electron acceptor. This could be attributed to the higher open circuit potential (OCP) provided by permanganate in the MFC. Besides, pH, unlike permanganate concentration, was further found to have a major impact on the OCP and the cathode potential. SEM and XPS analysis demonstrated that manganese dioxide (MnO2) was in fact the main reduced product of the permanganate at pH 3.6. Moreover, as compared to a two-chamber MFC, a bushing MFC using permanganate as the cathodic electron acceptor achieved an unprecedented maximum power-output of 3986.72 mW m(-2). This study for the first time showed that permanganate could be used as an effective cathodic electron acceptor for a MFC. (c) 2006 Elsevier B.V. All rights reserved.