title: Efficient wastewater treatment by membranes through constructing tunable antifouling membrane surfaces.
abstract: In the present study, a facile in situ approach for constructing tunable amphiphilic or hydrophilic antifouling membrane surfaces was demonstrated by exquisitely manipulating the microphase separation and surface segregation behavior of the tailor-made ternary amphiphilic block copolymers during the commonly utilized wet phase inversion membrane-formation process. Under dead-end filtration for oily wastewater treatment, the membrane with amphiphilic surface exhibited over 99.5% retention ratio of chemical oxygen demand (COD) without appreciable membrane fouling: the water permeation flux was slightly decreased during operation (total flux decline was 6.8%) and almost completely recovered to the initial value (flux recovery ratio was more than 99.0%) after simple hydraulic washing. While for the proteins-containing wastewater treatment, the membrane with hydrophilic surface exhibited about 52.6% COD retention ratio and superior antifouling performance: only 17.0% total flux decline and also more than 99.0% flux recovery ratio. Hopefully, the present approach can be developed as a competitive platform technology for the preparation of robust and versatile antifouling membrane, leading to the high process efficiency of wastewater treatments.
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P R China.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Chen
authors.forename: Yanlei
authors.initials: Y
authors.lastname: Su
authors.forename: Jinming
authors.initials: J
authors.lastname: Peng
authors.forename: Xueting
authors.initials: X
authors.lastname: Zhao
authors.forename: Zhongyi
authors.initials: Z
authors.lastname: Jiang
authors.forename: Yanan
authors.initials: Y
authors.lastname: Dong
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yangui
authors.initials: Y
authors.lastname: Liang
authors.forename: Jiazhen
authors.initials: J
authors.lastname: Liu
mesh_terms: D000818:Animals; D057219:Biofouling / Q000517:prevention & control*; D002417:Cattle; D005374:Filtration; D008567:Membranes, Artificial; D008968:Molecular Conformation; D010539:Permeability; D056951:Photoelectron Spectroscopy; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D012710:Serum Albumin, Bovine / Q000737:chemistry; D012996:Solutions; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D013997:Time Factors; D014835:Volatilization; D014865:Waste Disposal, Fluid; D014867:Water / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D012996:Solutions; D012997:Solvents; D013501:Surface-Active Agents; D014867:Water; D012710:Serum Albumin, Bovine