A novel electro-Fenton hybrid system for enhancing the interception of volatile organic compounds in membrane distillation desalination  

作　　者：Hongxin Liu Kuiling Li Kunpeng Wang Zhiyong Wang Zimou Liu Sichao Zhu Dan Qu Yu Zhang Jun Wang 

机构地区：[1]State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]State Key Laboratory of Environment Simulation and Pollution Control,School of Environment Tsinghua University,Beijing 100084,China [4]School of Chemical and Environmental Engineering,Beijing Campus,China University of Mining and Technology,Beijing 100083,China [5]Beijing Key Lab for Source Control Technology of Water Pollution,College of Environmental Science and Engineering,Beijing Forestry University,Beijing 100083,China

出　　处：《Journal of Environmental Sciences》2024年第4期189-199,共11页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52200111,51978651,and 51878049);the China Postdoctoral Science Foundation(No.2021M703407);the special fund from the State Key Joint Laboratory of Environment Simulation and Pollution Control(Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences(No.21Z01ESPCR)。

摘　　要：Membrane distillation(MD)is a promising alternative desalination technology,but the hydrophobic membrane cannot intercept volatile organic compounds(VOCs),resulting in aggravation in the quality of permeate.In term of this,electro-Fenton(EF)was coupled with sweeping gas membrane distillation(SGMD)in a more efficient way to construct an advanced oxidation barrier at the gas-liquid interface,so that the VOCs could be trapped in this layer to guarantee the water quality of the distillate.During the so-called EF-MD process,an interfacial interception barrier containing hydroxyl radical formed on the hydrophobic membrane surface.It contributed to the high phenol rejection of 90.2% with the permeate phenol concentration lower than 1.50 mg/L.Effective interceptions can be achieved in a wide temperature range,even though the permeate flux of phenol was also intensified.The EF-MD system was robust to high salinity and could electrochemically regenerate ferrous ions,which endowed the long-term stability of the system.This novel EF-MD configuration proposed a valuable strategy to intercept VOCs in MD and will broaden the application of MD in hypersaline wastewater treatment.

关 键 词：Membrane distillation VOC interception Interfacial oxidation ELECTRO-FENTON Hypersaline wastewater 

分 类 号：X701[环境科学与工程—环境工程]