globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2019.01.036
Scopus记录号: 2-s2.0-85062283351
论文题名:
Slippery for scaling resistance in membrane distillation: A novel porous micropillared superhydrophobic surface
作者: Xiao Z.; Zheng R.; Liu Y.; He H.; Yuan X.; Ji Y.; Li D.; Yin H.; Zhang Y.; Li X.-M.; He T.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 155
起始页码: 152
结束页码: 161
语种: 英语
英文关键词: Membrane ; Membrane distillation ; Micromolding phase separation ; Scaling ; Slippery ; Surface pattern
英文摘要: Scaling in membrane distillation (MD) is a key issue in desalination of concentrated saline water, where the interface property between the membrane and the feed become critical. In this paper, a slippery mechanism was explored as an innovative concept to understand the scaling behavior in membrane distillation for a soluble salt, NaCl. The investigation was based on a novel design of a superhydrophobic polyvinylidene fluoride (PVDF) membrane with micro-pillar arrays (MP-PVDF) using a micromolding phase separation (μPS) method. The membrane showed a contact angle of 166.0 ± 2.3° and the sliding angle of 15.8 ± 3.3°. After CF 4 plasma treatment, the resultant membrane (CF 4 -MP-PVDF) showed a reduced sliding angle of 3.0°. In direct contact membrane distillation (DCMD), the CF 4 -MP-PVDF membrane illustrated excellent anti-scaling in concentrating saturated NaCl feed. Characterization of the used membranes showed that aggregation of NaCl crystals occurred on the control PVDF and MP-PVDF membranes, but not on the CF 4 -MP-PVDF membrane. To understand this phenomenon, a “slippery” theory was introduced and correlated the sliding angle to the slippery surface of CF 4 -MP-PVDF and its anti-scaling property. This work proposed a well-defined physical and theoretical platform for investigating scaling problems in membrane distillation and beyond. © 2019 Elsevier Ltd
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被引频次[WOS]:177   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121910
Appears in Collections:气候变化事实与影响

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作者单位: Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China; University of Chinese Academy of Sciences, Beijing, 100049, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China; School of Engineering, University of Glasgow, Glasgow, G12 8LT, United Kingdom; National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Department of Materials Science & Engineering, Nanjing UniversityJiangsu 210093, China

Recommended Citation:
Xiao Z.,Zheng R.,Liu Y.,et al. Slippery for scaling resistance in membrane distillation: A novel porous micropillared superhydrophobic surface[J]. Water Research,2019-01-01,155
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