State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
Bioresour Technol. 2013 May;135:630-4. doi: 10.1016/j.biortech.2012.09.106. Epub 2012 Oct 5.
Fe(III) supplemented into microbial fuel cells (MFC) at initial start-up increased electricity generation by Shewanella oneidensis MR-1. The maximum power density reached 158.1 mW/m(2) with 6 mM Fe(III), compared with 73.9 mW/m(2) without Fe(III). A significant increase in power output was observed when MFC with established biofilm in the absence of Fe(III) was supplemented with Fe(III) afterward. The cell biomass of the anode biofilm of MFCs operated in the presence of Fe(III) was higher than that obtained without Fe(III). An optimum concentration of Fe(III) obviously improved electrochemical activity and the flavins secretion of strain MR-1. The results demonstrated that Fe(III) addition can enhance power generation by strain MR-1 due to the increase of cell biomass and flavins secretion.
在微生物燃料电池（MFC）初始启动时添加三价铁（Fe(III)）增加了希瓦氏菌属（Shewanella oneidensis MR-1）的发电能力。与不添加 Fe(III)的情况相比，添加 6 mM Fe(III)时的最大功率密度达到了 158.1 mW/m(2)。当在没有 Fe(III)的情况下已经建立生物膜的 MFC 随后添加 Fe(III)时，观察到功率输出显著增加。在存在 Fe(III)的情况下运行的 MFC 的阳极生物膜的细胞生物量高于没有 Fe(III)时获得的生物量。Fe(III)的最佳浓度明显提高了菌株 MR-1 的电化学活性和黄素分泌。结果表明，由于细胞生物量和黄素分泌的增加，添加 Fe(III)可以增强菌株 MR-1 的发电能力。
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