McGill University, Bioresource Engineering Department, 21111 Lakeshore Rd., Ste-Anne-de-Bellevue, QC H9X 3V9, Canada.
McGill University, Bioresource Engineering Department, 21111 Lakeshore Rd., Ste-Anne-de-Bellevue, QC H9X 3V9, Canada; National Research Council of Canada, 6100 Royalmount Ave, Montreal, QC H4P 2R2, Canada.
Bioelectrochemistry. 2019 Apr;126:105-112. doi: 10.1016/j.bioelechem.2018.11.007. Epub 2018 Dec 1.
This study compares the biosensing performance of a microbial fuel cell (MFC) and a microbial electrolysis cell (MEC). Initial tests provided a qualitative comparison of MFC and MEC currents after the anode compartment liquid (anolyte) was spiked with acetate, or sulphates of NH, Na, Mg, Fe, or a fertilizer solution. Current measurements showed that the MFC sensor had a faster response time, higher sensitivity, and faster recovery time after the spike. Following the spike tests, the MFC and MEC were operated in a continuous flow mode at several influent concentrations of acetate, and sulphates of NH, Na, and Fe. The continuous flow tests confirmed the better performance of the MFC sensor, which was selected for further experiments. Two MFC sensors were used for real-time (on-line) COD measurements of brewery wastewater. Regression analysis showed a strong correlation between the MFC power output and COD concentrations in the anode compartment with a coefficient of determination (R) of 0.97. Overall, results of this study suggest that an MFC-based sensor can be successfully used as a simple and cost-efficient real-time monitoring tool.
本研究比较了微生物燃料电池（MFC）和微生物电解池（MEC）的生物传感性能。在阳极室液体（阳极电解液）中加入乙酸盐、NH、Na、Mg、Fe 的硫酸盐或肥料溶液后，对 MFC 和 MEC 电流进行了初步测试，提供了定性比较。电流测量表明，MFC 传感器具有更快的响应时间、更高的灵敏度和更快的恢复时间。在尖峰测试之后，MFC 和 MEC 在几个乙酸盐、NH、Na 和 Fe 的硫酸盐入口浓度下以连续流动模式运行。连续流动测试证实了 MFC 传感器的更好性能，因此选择其进行进一步的实验。两个 MFC 传感器用于实时（在线）测量啤酒厂废水的 COD。回归分析表明，MFC 功率输出与阳极室中 COD 浓度之间具有很强的相关性，决定系数（R）为 0.97。总的来说，本研究结果表明，基于 MFC 的传感器可以成功用作简单且具有成本效益的实时监测工具。
