Innovative hydrophobic/hydrophilic perfluoropolyether(PFPE)/polyvinylidene fluoride(PVDF)composite membrane for vacuum membrane distillation

作     者：Jun Pan Xianli Xu Zhaohui Wang Shi-Peng Sun Zhaoliang Cui Lassaad Gzara Iqbal Ahmed Omar Bamaga Mohammed Albeirutty Enrico Drioli Jun Pan;Xianli Xu;Zhaohui Wang;Shi-Peng Sun;Zhaoliang Cui;Lassaad Gzara;Iqbal Ahmed;Omar Bamaga;Mohammed Albeirutty;Enrico Drioli

作者机构：State Key Laboratory of Materials-Oriented Chemical EngineeringCollege of Chemistry and Chemical EngineeringNanjing Tech UniversityNanjing 210009China National Engineering Research Center for Special Separation MembraneNanjing Tech UniversityNanjing 210009China Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech UniversityNanjing 210009China Center of Excellence in Desalination TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia Mechanical Engineering DepartmentKing Abdulaziz UniversityJeddah 21589Saudi Arabia Research Institute on Membrane TechnologyITM-CNRVia Pietro Bucci 17/CRende 87036Italy 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2022年第35卷第5期

页      面：248-257页

核心收录：

学科分类：080706[工学-化工过程机械] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0824[工学-船舶与海洋工程] 

基　　金：financial support of the National Key Research&Development Program of China(2017YFC0403702) the National Natural Science Foundation of China(51861135203) the Jiangsu Provincial Department of Human Resources and Social Security(JNHB-036) the Materials-Oriented Chemical Engineering State Key Laboratory Program(KL19-04) Deputyship for Research and Innovation,Ministry of Education in Saudi Arabia for funding this research work through the project number(632) 

主　　题：Desalination Membrane surface coating Composite membranes Anti-wetting Vacuum membrane distillation 

摘      要：Though membrane distillation(MD)has gained more and more attention in the field of desalination,the wetting phenomenon was still a non-negligible *** this work,a method combined dip-coating and UV in situ polymerization for preparing hydrophobic/hydrophilic perfluoropolyether(PFPE)/polyvinylidene fluoride composite *** composite membrane consisted of a top thin hydrophobic coating layer and hydrophilic substrate *** terms of anti-wetting properties,contact angle and liquid entry pressure of all composite membranes(except for those based on 0.45μm)exceeded 160°and 0.3 MPa,*** particular,the desalination performance was tested in vacuum membrane distillation tests by feeding 3.5%(mass)saline solution(NaCl)at 60℃.The composite membranes with larger support pore size and lower PFPE content had higher membrane distillation *** for stability tests(testing the 0.22μm membrane coated by 5%(mass)PFPE),the highest MD flux29.08 kg·m^(-2)·h^(-1) and stable salt rejection(over 99.99%)during the *** that,the effects of coating material concentration and pore sizes of substrate membrane were also investigated for surface morphology and topography,porosity,mechanical strength and pore size *** work provided a simple and effective alternative to prepare excellent hydrophobic composite membranes for MD applications.