Enhanced performance of superhydrophobic polypropylene membrane with modified antifouling surface for high salinity water treatment
发布时间：2019-11-07
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- 论文类型：
- 期刊论文
- 发表时间：
- 2019-05-01
- 发表刊物：
- SEPARATION AND PURIFICATION TECHNOLOGY
- 收录刊物：
- CPCI-S、SCIE、EI
- 文献类型：
- J
- 卷号：
- 214
- 期号：
- ,SI
- 页面范围：
- 11-20
- ISSN号：
- 1383-5866
- 关键字：
- Membrane distillation; Superhydrophobic membrane; Antifouling; Nucleation; Water treatment
- 摘要：
- In this work, the superhydrophobic polypropylene (PP) composite membranes with modified surface were successfully fabricated by loading the SiO2 nanoparticles and attaching low surface energy 1H,1H,2H,2H-perfluorodecyltriethoxysilane. The impact of deposited nanoparticle size on the surface roughness, heterogeneous nucleation barrier and critical nucleus size versus the loaded nanoparticle size (d(nuclear)(*)/d) was simulated by the model combining the surface roughness and superhydrophobility with the critical nucleation energy. The optimized loaded nanoparticles size maintained the proper roughness and d(nuclear)(*)/d to ensure the desired performance of antifouling. The improved superhydrophobic surface enhanced the anti-wetting ability of the membrane for vacuum membrane distillation (VMD) purpose. The resulting modified membrane possessed good anti wetting ability and stable anti-fouling performance during long-term continuous and batch operation of VMD treating high salinity water system. The fouling rate of the fabricated membrane was decreased to 20% of the one of the original membrane under 15 wt% high salinity feed condition.
- 第一作者
- Wang, Yingqi
- 合写作者
- Li, Xiangcun,Wu, Xuemei,Jiang, Xiaobin,Shao, Yushan,Zhang, Daishuang,Ruan, Xuehua,Xiao, Wu,He, Gaohong
- 通讯作者
- Jiang, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Engn Lab Petrochem Energy Efficient Separat Techn, Sch Chem Engn, Dalian 116024, Peoples R China.