Biotechnology Research Institute, National Research Council, 6100 Royalmount Ave., Montréal, Que., Canada.
Water Res. 2011 Feb;45(4):1571-8. doi: 10.1016/j.watres.2010.11.033. Epub 2010 Nov 30.
This work evaluates the impact of the external resistance (electrical load) on the long-term performance of a microbial fuel cell (MFC) and demonstrates the real-time optimization of the external resistance. For this purpose, acetate-fed MFCs were operated at external resistances, which were above, below, or equal to the internal resistance of a corresponding MFC. A perturbation/observation algorithm was used for the real-time optimal selection of the external resistance. MFC operation at the optimal external resistance resulted in increased power output, improved Coulombic efficiency, and low methane production. Furthermore, the efficiency of the perturbation/observation algorithm for maximizing long-term MFC performance was confirmed by operating an MFC fed with synthetic wastewater for over 40 days. In this test an average Coulombic efficiency of 29% was achieved.
这项工作评估了外部电阻（电负载）对微生物燃料电池（MFC）长期性能的影响，并展示了外部电阻的实时优化。为此，在外部电阻下运行乙酸盐喂养的 MFC，该电阻高于、低于或等于相应 MFC 的内阻。使用扰动/观察算法实时选择最佳外部电阻。在最佳外部电阻下运行 MFC 可提高功率输出、提高库仑效率和降低甲烷生成量。此外，通过使用合成废水运行 MFC 超过 40 天，证实了扰动/观察算法最大化长期 MFC 性能的效率。在此测试中，实现了平均 29%的库仑效率。
