School of Environmental Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Korea.
Environ Sci Technol. 2012 Mar 6;46(5):3022-30. doi: 10.1021/es203861v. Epub 2012 Feb 15.
Simultaneous electricity generation and distillery wastewater (DWW) treatment were accomplished using a thermophilic microbial fuel cell (MFC). The results suggest that thermophilic MFCs, which require less energy for cooling the DWW, can achieve high efficiency for electricity generation and also reduce sulfate along with oxidizing complex organic substrates. The generated current density (2.3 A/m(2)) and power density (up to 1.0 W/m(2)) were higher than previous wastewater-treating MFCs. The significance of the high Coulombic efficiency (CE; up to 89%) indicated that electrical current was the most significant electron sink in thermophilic MFCs. Bacterial diversity based on pyrosequencing of the 16S rRNA gene revealed that known Deferribacteres and Firmicutes members were not dominant in the thermophilic MFC fed with DWW; instead, uncharacterized Bacteroidetes thermophiles were up to 52% of the total reads in the anode biofilm. Despite the complexity of the DWW, one single bacterial sequence (OTU D1) close to an uncultured Bacteriodetes bacterium became predominant, up to almost 40% of total reads. The proliferation of the D1 species was concurrent with high electricity generation and high Coulombic efficiency.
利用嗜热微生物燃料电池（MFC）同时进行发电和酿酒废水（DWW）处理。结果表明，需要较少能量来冷却 DWW 的嗜热 MFC 可以实现高效率的发电，同时还可以减少硫酸盐并氧化复杂的有机基质。所产生的电流密度（2.3 A/m²）和功率密度（高达 1.0 W/m²）高于以前处理废水的 MFC。高库仑效率（CE；高达 89%）的重要意义表明，电流是嗜热 MFC 中最重要的电子汇。基于 16S rRNA 基因的焦磷酸测序揭示了在以 DWW 为食的嗜热 MFC 中，已知的脱硫杆菌和厚壁菌门成员并不占优势；相反，未鉴定的拟杆菌门嗜热菌在阳极生物膜中的总读数高达 52%。尽管 DWW 很复杂，但与未培养的拟杆菌门细菌密切相关的单个细菌序列（OTU D1）成为优势菌，占总读数的近 40%。D1 种的增殖与高发电和高库仑效率同时发生。
