Highly hydrophobic oil−water separation membrane: reutilization of waste reverse osmosis membrane

作     者：Zihan Liu Yang Luo Lianchao Ning Yong Liu Ming Zhang Zihan Liu;Yang Luo;Lianchao Ning;Yong Liu;Ming Zhang

作者机构：School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China Center of Membrane Materials and Engineering TechnologyTianjin University of TechnologyTianjin 300384China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2022年第16卷第11期

页      面：1606-1615页

核心收录：

学科分类：080706[工学-化工过程机械] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China(Grant No.21576205) the Tianjin Natural Science Foundation(Grant No.18JCTPJC48600) the Training Project of Innovation Team of Colleges and Universities in Tianjin(GrantNo.TD13-5020) 

主　　题：oil–water separation wasted reverse osmosis membrane hydrophobic modification 

摘      要：The increasing applications of seawater desalination technology have led to the wide usage of polyamide reverse osmosis membranes,resulting in a large number of wasted reverse osmosis *** this work,the base nonwoven layer of the wasted reverse osmosis membrane was successfully modified into the hydrophobic membrane via surface deposition strategy including TiO_(2) and 1H,1H,2H,2H-perfluorooctyltrichlorosilane(PFOTS),*** techniques were applied to characterize the obtained membranes,which were then used to separate the oil–water *** optimally modified membrane displayed good hydrophobicity with a contact angle of 135.2°±0.3°,and its oil–water separation performance was as high as 97.8%.After 20 recycle tests,the oil–water separation performance remained more than 96%,which was attributed to the film adhesion of the anchored TiO_(2) and PFOTS layer on the *** work might provide a new avenue for recycling the wasted reverse osmosis membrane used in oily wastewater purification.