Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
Bioresour Technol. 2013 Jan;128:259-65. doi: 10.1016/j.biortech.2012.10.001. Epub 2012 Oct 23.
This study compared the difference in microbial community and power generation capacity of air-cathode MFCs enriched under anode aerobic and anaerobic conditions. Results showed that MFCs successfully started with continuous air inputting to anode chamber. The aerobic enriched MFC produced comparable and even more electricity with the fuels of acetate, glucose and ethanol compared to the anaerobic MFC when returning to anaerobic condition. The two MFCs showed a slightly different microbial community for anode biofilms (a similarity of 77%), but a highly similar microbial community (a similarity of 97%) for anolyte microbes. The anode biofilm of aerobic enriched MFC showed the presence of some specific bacteria closely related to Clostridium sticklandii, Leucobacter komagatae and Microbacterium laevaniformans. The anaerobic enriched MFC found the presence of a large number of yeast Trichosporon sp. This research demonstrates that it is possible to enrich oxygen-tolerant anode respiring bacteria through purposely aeration in anode chamber.
本研究比较了在有氧和无氧条件下富集的空气阴极 MFC 中微生物群落和发电能力的差异。结果表明，MFC 可以成功地通过连续向阳极室输入空气来启动。当回到厌氧条件时，有氧富集 MFC 以乙酸盐、葡萄糖和乙醇为燃料产生的电量与厌氧 MFC 相当，甚至更多。两种 MFC 的阳极生物膜微生物群落略有不同（相似度为 77%），但阳极电解液微生物群落高度相似（相似度为 97%）。有氧富集 MFC 的阳极生物膜中存在一些与 Clostridium sticklandii、Leucobacter komagatae 和 Microbacterium laevaniformans 密切相关的特定细菌。厌氧富集 MFC 发现了大量的酵母 Trichosporon sp. 。本研究表明，通过在阳极室中有意曝气，可以富集耐氧的阳极呼吸细菌。
