Preparation and recovery of polysulfone affinity membrane with mercapto as chelating group for Hg2+ cations

被引:0
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作者
Wang, Bing [1 ]
Yang, Xinlin [2 ]
Huang, Wenqiang [2 ]
机构
[1] Key Laboratory of Hollow Fiber Membrane Material and Membrane Process, Ministry of Education, Tianjin Polytechnic University, Tianjin 300160, China
[2] Key Laboratory of Functional Polymer Materials, Ministry of Education, Nankai University, Tianjin 300071, China
来源
Journal of Applied Polymer Science | 1600年 / 103卷 / 04期
关键词
Highly qualified homogeneous poly(benzylsulfone) plate affinity membrane with mercapto group (PSF-SH) was prepared successively through reactions between chloromethyl polysulfone matrix membrane and thiourea; and then alkalic hydrolysis. The mercapto-functionalized polysulfone affinity membrane was utilized for the adsorption of Hg2+ cations through the coordination of the mercapto group and Hg2+ cations; in which the effects of the morphological and the structure of the affinity membrane on the chelating properties were investigated. The chelating conditions; including concentration of Hg2+; and temperature and pH of the introductory solution had significant influence on the chelating capacity of PSF-SH affinity membrane. The highest static and dynamic chelating capacity of PSF-SH plate membrane for Hg2+ cations were 398 and 403 μg/cm2 per membrane; respectively; which demonstrated that the resultant polymer membrane was a highly efficient affinity chromatography for Hg2+. The affinity membrane containing mercapto group can be conveniently recovered by dilute hydrochloric acid for coordination of Hg2+ cations; which would have wide application for the treatment of waste water containing heavy metal cations. © 2006 Wiley Periodicals; Inc;
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页码:2514 / 2522
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