Laboratory of Chemical and Environmental Engineering (LEQUIA-UdG), Institute of the Environment, University of Girona, Campus Montilivi s/n, Facultat de Ciències, E-17071 Girona, Spain.
Bioresour Technol. 2010 Dec;101(24):9594-9. doi: 10.1016/j.biortech.2010.07.082. Epub 2010 Jul 24.
The aim of this work was to study the effect of pH on electricity production and contaminant dynamics using microbial fuel cells (MFCs). To investigate these effects, an air-cathode MFC was used to treat urban wastewater by adjusting the pH between 6 and 10. The short-term tests showed that the highest power production (0.66 W.m(-3)) was at pH 9.5. The MFC operation in continuous control mode for 30 days and at the optimal pH improved the performance of the cell relative to power generation to 1.8 W.m(-3). Organic matter removal (77% of influent COD) and physical ammonium loss were directly influenced by pH and followed the same behavior as the power generation. At a pH higher than the optimal one, anodic bacteria were affected, and power generation ceased. However, biological nitrogen processes and phosphorus dynamics were independent of the exoelectrogenic bacteria.
本工作旨在研究 pH 值对微生物燃料电池 (MFC) 产电和污染物动态的影响。为了研究这些影响，使用空气阴极 MFC 处理城市废水，通过将 pH 值调节在 6 到 10 之间。短期测试表明，在 pH 值为 9.5 时，产电效率最高（0.66 W·m(-3)）。在最佳 pH 值下连续控制运行 30 天，提高了电池相对于发电的性能，达到 1.8 W·m(-3)。有机物去除（进水 COD 的 77%）和物理铵损失直接受 pH 值影响，并表现出与发电相同的行为。在高于最佳 pH 值的情况下，阳极细菌受到影响，发电停止。然而，生物氮过程和磷动态与外源性细菌无关。
