Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Institute of Nano Science and Physical Engineering, Kim Chaek University of Technology, Pyongyang, North Korea.
Chemosphere. 2022 Feb;289:133070. doi: 10.1016/j.chemosphere.2021.133070. Epub 2021 Nov 25.
A simple multi electric resistance mode is used to regulate electroactive anode film, which improves the electricity generation, HO production and pollutants removal. This external electron transport path (double cathode with different resistance) exhibits higher HO production (571.9 ± 0.1 mg m h), tetracycline removal (71.4 ± 0.4% to 50 mg L), and power (615.3 ± 9.9 mW m plus 680.6 ± 10.3 mW m), which is 75.4%, 23.1% and 1.25 times higher than that of single cathode mode. The double cathode improves the relative abundance of Geobacter (exoelectrogens), which is 9.45 times higher than that of single cathode mode. The anodic capacitance of double cathode mode is more than 10 times higher than that of single cathode mode. Electrons (generate by exoelectrogens) participate in two- (cathodic chamber) and four- (anodic chamber) electron reaction at cathode surface, and facilitates electricity generation of bioelectro-Fenton. The removal rate of double cathode mode is 342.7 mg L d (50 mg L tetracycline) and 170.1 mg L d (20 mg L tetracycline), which is much higher than that of reported. These results indicate that external electron transport path enhances the electrochemical activity of anode film and performance of bioelectro-Fenton. This paper provides a new power supply method for the future practical application and field experiment of bioelectrio-Fenton.
采用简单的多电阻模式来调节电活性阳极膜，从而提高了发电量、HO 的生成和污染物的去除。这种外部电子传输路径（具有不同电阻的双阴极）表现出更高的 HO 生成（571.9±0.1mg m h）、四环素去除（71.4±0.4%降至 50mg L）和功率（615.3±9.9mW m 加 680.6±10.3mW m），分别是单阴极模式的 75.4%、23.1%和 1.25 倍。双阴极提高了 Geobacter（外电子体）的相对丰度，是单阴极模式的 9.45 倍。双阴极的阳极电容比单阴极模式高 10 倍以上。电子（由外电子体产生）在阴极表面参与二（阴极室）和四（阳极室）电子反应，有利于生物电化学-Fenton 的发电。双阴极模式的去除率为 342.7mg L d（50mg L 四环素）和 170.1mg L d（20mg L 四环素），远高于报道的水平。这些结果表明，外部电子传输路径增强了阳极膜的电化学活性和生物电化学-Fenton 的性能。本文为生物电化学-Fenton 的未来实际应用和现场试验提供了一种新的供电方法。
