An ultrathin, porous and in-air hydrophilic/underwater oleophobic coating simultaneously increasing the flux and antifouling property of membrane for membrane distillation | |
Sun, Weishi; Shen, Fei1; Wang, Zhaoshuai; Zhang, Yan; Wan, Yinhua | |
刊名 | DESALINATION |
2018-11-01 | |
卷号 | 445页码:40-50 |
关键词 | Surface Modification Dopamine Coating Membrane Distillation Fouling |
ISSN号 | 0011-9164 |
DOI | 10.1016/j.desal.2018.07.026 |
英文摘要 | Surface modification is a useful method to enhance the antifouling ability of membranes for membrane distillation (MD). However, current surface modification strategies often tend to sacrifice the membrane flux. In this work, we decorated a commercial hydrophobic polytetrafluoroethylene (PTFE) membrane by coating dopamine (DA) alone. A unique surface coating being ultrathin, porous, and in-air hydrophilic/underwater oleophobic was constructed, which simultaneously increased the flux and fouling resistance of the PTFE membrane in MD desalination. When treating a 3.5 wt% NaCl aqueous solution at 70 degrees C through vacuum MD (VMD), compared with the pristine PIPE membrane flux of 28.8 kg/m(2).h, the flux of the modified membrane 0.5DA@PTFE-4 reached 89.6 kg/m(2).h, and the flux increased by 210%. Continuous VMD operations demonstrated that the 0.5DA@PTFE-4 membrane held a higher resistance to scaling than the pristine one. Moreover, the pristine PTFE membrane was incompetent to tackle an oily saline via VMD, showing an immediate membrane fouling and wetting. The 0.5DA@PTFE-4 membrane, however, exhibited a significant improvement in oil fouling resistance, rendering the VMD desalination process viable for more than 30 h. The findings in this work provided a new insight to develop the robust membrane with high performance used for MD. |
资助项目 | National Natural Science Foundation of China[21106153] ; Solar Energy Initiative of the Chinese Academy of Sciences[KGCX2-YW-380] ; National High-Tech R&D Program of China[2012AA021202] ; National High-Tech R&D Program of China[2014AA021005] |
WOS关键词 | Direct-contact Membrane ; Hollow-fiber Membranes ; Polydopamine Deposition Conditions ; Surface Modification ; Aqueous-solution ; Composite Membranes ; Fouling Resistance ; Desalination ; Layer ; Separation |
WOS研究方向 | Engineering ; Water Resources |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000446287300005 |
资助机构 | National Natural Science Foundation of China ; Solar Energy Initiative of the Chinese Academy of Sciences ; National High-Tech R&D Program of China |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/26255] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Shen, Fei |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Sun, Weishi,Shen, Fei,Wang, Zhaoshuai,et al. An ultrathin, porous and in-air hydrophilic/underwater oleophobic coating simultaneously increasing the flux and antifouling property of membrane for membrane distillation[J]. DESALINATION,2018,445:40-50. |
APA | Sun, Weishi,Shen, Fei,Wang, Zhaoshuai,Zhang, Yan,&Wan, Yinhua.(2018).An ultrathin, porous and in-air hydrophilic/underwater oleophobic coating simultaneously increasing the flux and antifouling property of membrane for membrane distillation.DESALINATION,445,40-50. |
MLA | Sun, Weishi,et al."An ultrathin, porous and in-air hydrophilic/underwater oleophobic coating simultaneously increasing the flux and antifouling property of membrane for membrane distillation".DESALINATION 445(2018):40-50. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论