膜科学与技术

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Preparation and Characterization of Forward Osmosis Membranes based on Dual-layer Composite Support

Authors： SONG Yang 1, Jiang Lanying1,2*, Li Zhiqiang1

Units： 1. School of Metallurgy and Environment, Central South University, Changsha 410083, China; 2. National Engineering Research Center for Heavy Metal Pollution Control, Changsha, Hunan 410083, China

KeyWords： forward osmosis; interfacial polymerization; support; ICP

ClassificationCode：TQ9

year,volume(issue):pagination： 2018,38(3):75-82

Abstract：

FO membranes were prepared by interfacial polymerization using double-layer PEEK-WC hollow fiber membranes with different structures as support. The outer surface of the support influenced the interface polymerized layer. The polyamide layer on the surface with smaller pore size was denser. Higher porosity and increased pore size/porosity on membrane surface enhanced membrane flux. The ICP phenomenon was affected not only by the support layer, but also the type of draw solution. In comparison with NaCl, the use of Na2SO4 as draw solution increased the water flux by 1.3-1.6 times and reduced the reverse salt flux decreased by 76% -95%.

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AuthorIntro：

宋阳（1991-），男，湖北省武汉人，硕士生，主要从事正渗透膜分离技术研究。*通讯作者，E-mail：jianglanyingsme@csu.edu.cn

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