膜
润湿
化学工程
材料科学
膜技术
渗透
色谱法
焊剂(冶金)
分离(统计)
重力分离
结垢
化学
渗透
复合材料
计算机科学
工程类
生物化学
机器学习
冶金
作者
Seungtae Oh,Seokkan Ki,Seunggeol Ryu,Min-Chul Shin,Jinki Lee,Choongyeop Lee,Youngsuk Nam
出处
期刊:Langmuir
[American Chemical Society]
日期:2019-05-17
卷期号:35 (24): 7769-7782
被引量:32
标识
DOI:10.1021/acs.langmuir.9b00993
摘要
A membrane with selective wettability to either oil or water has been utilized for highly efficient, environmentally friendly membrane-based oil-water separation. However, a predictive model, which can be used to evaluate the overall separation performance of the membrane, still needs further development. Herein, we investigate three separation performance parameters, that is, separation efficiency, liquid intrusion pressure, and mass flux in particular, as a function of pore geometry and liquid properties using metallic meshes whose surface wettability is modified by scalable spray coating. We show that the prepared membrane exhibits a separation efficiency over 98% below the intrusion pressure, while the intrusion pressure increases with the decrease of pore size of the membrane. Particularly, we develop a semi-empirical model for the mass flux through the membrane. As application examples of our performance analysis, we successfully predict the separation time for one-way and two-way gravity-driven separation of the oil-water mixture, the decrease of the mass flux due to membrane fouling, and the maximum allowable separation capacity of the given membrane. This work can help to design optimal membrane-based oil-water separation systems for actual industrial applications by providing a selection guideline for separation membranes.
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