标题: A novel cost-effective flow-through electrode based on polyacrylonitrile carbon fiber for enhancing micropollutant degradation via electro-Fenton

作者: Yu Huang, Lin Shi, Xiaofei Chen, Liandong Zhu, Xuhui Mao, Tao Xu, Hua Zhu, Xu Wang

来源出版物: Chemical Engineering Journal 卷: 477 文献编号: 147130 DOI: 10.1016/j.cej.2023.147130出版时间: 1 December 2023

摘要: Electrochemical filtration is an effective technology for treating the wastewater that containing low-concentration organic micropollutants. However, its practical application has been hindered by the lack of feasible flow-through electrodes. Herein, a physically assembled flow-through cathode, based on commercial polyacrylonitrile-based (PAN) carbon fiber (CF), was introduced in an electro-Fenton (EF) system. The conductive filtration element, created by coiling the FeOCl-functionalized CF onto a cylindrical support, exhibited effective and consistent degradation of diverse micropollutants (77.9–94.5 %, TOC: 32.4–50.5 %) after a single-pass filtration. The excellent two-electron (2 e−) oxygen reduction reaction (ORR) performance of PAN-CF, along with the enhanced mass transfer in the flow-through configuration, contributed to the pollutant degradation by generating considerable reactive oxygen species (ROSs, including H2O2 and •OH) and facilitating adequate contact between pollutants and ROSs. The integration of electrochemistry significantly improved the antifouling performance of the filter, making it promising for real wastewater treatment. Detailed calculations and comparisons further confirmed the cost advantages of the proposed flow-through electrodes. This study provides a unique solution for the design and fabrication of engineeringly and economically feasible flow-through electrodes in electrochemical filtration systems.

作者关键词: Carbon fiber; Electrochemical filtration; Flow-through; Electro-Fenton; Micropollutant; Antifouling

地址:

[Yu Huang, Liandong Zhu, Xuhui Mao, Tao Xu, Hua Zhu, Xu Wang]School of Resources and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China

[Lin Shi]Wuhan Design & Research Institute Co. Ltd. of China, Coal Technology & Engineering Group, Wuhan 430064, China

[Xiaofei Chen]Hubei Provincial Academy of Eco-Environmental Sciences, Wuhan 430079, China

通讯作者: Xu Wang;School of Resources and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China

电子邮箱: xu.wang@whu.edu.cn

影响因子：15.1