Membrane Science and Technology

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Preparation of PVDF Hollow Fiber Membranes for Seawater Bromine Extraction

Authors： LI Xiaoming，LV Jinglie，LIU Guochang，ZHANG Zhaocai，Guan Yipeng，GUO Chungang

Units： Institute of Seawater Desalination and Multipurpose Utilization, State

KeyWords： hydrophobic hollow fiber membrane；PVDF；phase inversion；post-treatment； seawater bromine extraction；

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2011, 31(5):13-17

Abstract：

Hydrophobic PVDF hollow fiber membranes for seawater bromine extraction were prepared by phase inversion method. The effects of membrane preparing conditions, such as PVDF concentration, composite inorganic additive concentration, drying methods and post-treatments on membrane structure and performance were investigated. The results showed that composite inorganic additive nearly would not affect membrane hydrophobicity, but could improve membrane mechanical property. Solvent-replacement methods could not completely prevent membrane shrinkage, which directly affecting membrane pore structure integrity and membrane permeability. Physical post-treatment was used to improve membrane permeability apparently. The Membrane N2 flux and porosity were 8.62m3•m-2•h-1 and 63.31% respectively, breaking strength was 1.64 cN•Tex-1 and breaking elongation was 79.10%.

Funds：

中央级公益性科研院所基本科研业务费专项资金项目

AuthorIntro：

李晓明(1980- ),女,辽宁朝阳人,硕士研究生,工程师,从事膜材料制备及应用研究.〈lixiaoming0618 @yahoo.com.cn〉

Reference：

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