YUAN Yu-jie,ZHAO Ya-qian,FU Jing-miao,et al.Electron Flow in Constructed Wetland-Microbial Fuel Cells and Its Effect on Wastewater Treatment Enhancement[J].China Water & Wastewater,2021,37(16 16):27-34.
Electron Flow in Constructed Wetland-Microbial Fuel Cells and Its Effect on Wastewater Treatment Enhancement
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
16 16
Page:
27-34
Column:
Date of publication:
2021-08-17
- Abstract:
- The process of electron transfer in the coupling system of constructed wetland-microbial fuel cell (CW-MFC) is extremely complex. While there are still many research spaces for electron transfer between electrodes, as well as the interaction of microbes with the electrodes. In this paper, the formation and the influence factors of the electron flow in electroactive CWs and the effects driven by the electron flow on wastewater treatment practice are reviewed in great details. Various studies supported that the enhancement of wastewater treatment in CW-MFC is mainly due to the electron transfer in the anaerobic zone of CW. The degradation of pollutants is closely related to the redox conditions of electroactive CWs. The factors such as distance, position, material and internal & external resistance of the electrode, have certain influence on the performance of the system. Microbiota may also be involved in electron transfer mechanisms. Finally, the future research directions of electroactive CWs should focus on exploring further insight into the electron recovery, proton transfer and interaction between microorganisms and electrodes.
Last Update:
2021-08-17