Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions

CIESC Journal

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Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions

WANG Shu(王枢), CHU Liangyin(褚良银) and CHEN Wenmei(陈文梅)

School of Chemical Engineering, Sichuan University, Chengdu 610065, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-02-28 发布日期:2006-02-28
通讯作者: CHU Liangyin(褚良银)

Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions

Received:1900-01-01 Revised:1900-01-01 Online:2006-02-28 Published:2006-02-28

摘要/Abstract

摘要： Fouling-resistant ceramic-supported polymer composite membranes were developed for removal of oil-in-water (O/W) microemulsions. The composite membranes were featured with an asymmetric three-layer structure, i.e., a porous ceramic membrane substrate, a polyvinylidene fluoride (PVDF) ultrafiltration sub-layer, and a polyam-ide/polyvinyl alcohol (PVA) composite thin top-layer. The PVDF polymer was cast onto the tubular porous ceramic membranes with an immersion precipitation method, and the polyamide/PVA composite thin top-layer was fabricated with an interfacial polymerization method. The effects of the sub-layer composition and the recipe in the interfacial po-lymerization for fabricating the top-layer on the structure and performance of composite membranes were systematically investigated. The prepared composite membranes showed a good performance for treating the O/W microemulsions with a mean diameter of about 2.4µm. At the operating pressure of 0.4MPa, the hydraulic permeability remained steadily about 190L·m－2·h－1, the oil concentration in the permeate was less than 1.6mg•L－1, and the oil rejection coefficient was always higher than 98.5% throughout the operation from the beginning.

关键词: composite membranes;fouling-resistant;oil/water separation;microemulsion;interfacial polymerization

Key words: composite membranes, fouling-resistant, oil/water separation, microemulsion, interfacial polymerization

WANG Shu(王枢), CHU Liangyin(褚良银) and CHEN Wenmei(陈文梅). Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions[J]. CIESC Journal.

WANG Shu(王枢), CHU Liangyin(褚良银) and CHEN Wenmei(陈文梅). Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions[J]. .

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Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions

Fouling-resistant Composite Membranes for Separation of Oil-in-water Microemulsions

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