Development of an Electrochemical Ceramic Membrane Filtration System for Efficient Contaminant Removal from Waters

doi:10.1021/acs.est.7b06407

	Development of an Electrochemical Ceramic Membrane Filtration System for Efficient Contaminant Removal from Waters
	Zheng, Junjian 1; Wang, Zhiwei 1,2; Ma, Jinxing 3; Xu, Shaoping 1; Wu, Zhichao 1
刊名	Environmental Science and Technology
	2018
卷号	52 期号:7 页码:4117-4126
ISSN号	0013936X
DOI	10.1021/acs.est.7b06407
英文摘要	Inability to remove low-molecular-weight anthropogenic contaminants is a critical issue in low-pressure membrane filtration processes for water treatment. In this work, a novel electrochemical ceramic membrane filtration (ECMF) system using TiO2@SnO2-Sb anode was developed for removing persistent p-chloroaniline (PCA). Results showed that the ECMF system achieved efficient removal of PCA from contaminated waters. At a charging voltage of 3 V, the PCA removal rate of TiO2@SnO2-Sb ECMF system under flow-through mode was 2.4 times that of flow-by mode. The energy consumption for 50% of PCA removal for TiO2@SnO2-Sb ECMF at 3 V under flow-through mode was 0.38 Wh/L, much lower than that of flow-by operation (1.5 Wh/L), which was attributed to the improved utilization of the surface adsorbed HO· and dissociated HO· driven by the enhanced mass transfer of PCA toward the anode surface. Benefiting from the increased production of reactive oxygen species such as O2•-, H2O2, and HO· arising from excitation of anatase TiO2, TiO2@SnO2-Sb ECMF exhibited a superior electrocatalytic activity to the SnO2-Sb ECMF system. The degradation pathways of PCA initiated by OH· attack were further proposed, with the biodegradable short-chain carboxylic acids (mainly formic, acetic, and oxalic acids) identified as the dominant oxidized products. These results highlight the potential of the ECMF system for cost-effective water purification. © 2018 American Chemical Society.
出版者	American Chemical Society
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25317]
专题	中国科学院上海硅酸盐研究所
作者单位	1.State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai; 200092, China; 2.Shanghai Institute of Pollution Control and Ecological Security, Shanghai; 200092, China; 3.UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney; NSW; 2052, Australia
推荐引用方式 GB/T 7714	Zheng, Junjian,Wang, Zhiwei,Ma, Jinxing,et al. Development of an Electrochemical Ceramic Membrane Filtration System for Efficient Contaminant Removal from Waters[J]. Environmental Science and Technology,2018,52(7):4117-4126.
APA	Zheng, Junjian,Wang, Zhiwei,Ma, Jinxing,Xu, Shaoping,&Wu, Zhichao.(2018).Development of an Electrochemical Ceramic Membrane Filtration System for Efficient Contaminant Removal from Waters.Environmental Science and Technology,52(7),4117-4126.
MLA	Zheng, Junjian,et al."Development of an Electrochemical Ceramic Membrane Filtration System for Efficient Contaminant Removal from Waters".Environmental Science and Technology 52.7(2018):4117-4126.