Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic membrane filtration process  

作　　者：Shan Xue Shaobin Sun Weihua Qing Taobo Huang Wen Liu Changqing Liu Hong Yao Wen Zhang 

机构地区：[1]School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao,266033,China [2]Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard,Department of Municipal and Environmental Engineering,School of Civil Engineering,Beijing Jiaotong University,Beijing,100044,China [3]John A.Reif,Jr.Department of Civil and Environmental Engineering,New Jersey Institute of Technology,Newark,NJ,07102,USA [4]College of Environmental Sciences and Engineering,Peking University,Key Laboratory of Water and Sediment Sciences(Ministry of Education),Beijing,100871,China

出　　处：《Frontiers of Environmental Science & Engineering》2021年第5期213-225,共13页环境科学与工程前沿（英文）

基　　金：the National Natural Science Foundation of China(Grant Nos.51778306,21906001 and 51721006).

摘　　要：The present study evaluated a photo-Fenton reactive membrane that achieved enhanced 1,4-Dioxane removal performance.As a common organic solvent and stabilizer,1,4-Dioxane is widely used in a variety of industrial products and poses negative environmental and health impacts.The membrane was prepared by covalently coating photocatalyst of goethite(α-FeOOH)on a ceramic porous membrane as we reported previously.The effects of UV irradiation,H_(2)O_(2)and catalyst on the removal efficiency of 1,4-Dioxane in batch reactors were first evaluated for optimized reaction conditions,followed by a systematical investigation of 1,4-Dioxane removal in the photo-Fenton membrane filtration mode.Under optimized conditions,the 1,4-Dioxane removal rate reached up to 16%with combination of 2 mmol/L H_(2)O_(2)and UV365 irradiation(2000µW/cm^(2))when the feed water was filtered by the photo-Fenton reactive membrane at a hydraulic retention time of 6 min.The removal efficiency and apparent quantum yield(AQY)were both enhanced in the filtration compared to the batch mode of the same photo-Fenton reaction.Moreover,the proposed degradation pathways were analyzed by density functional theory(DFT)calculations,which provided a new insight into the degradation mechanisms of 1,4-Dioxane in photo-Fenton reactions on the functionalized ceramic membrane.

关 键 词：PHOTO-FENTON Ceramic membrane 1 4-Dioxane GOETHITE 

分 类 号：O43[机械工程—光学工程] TB43[理学—光学]