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Preparation and recovery of polysulfone affinity membrane with mercapto as chelating group for Hg 2+ cations
Author(s) -
Wang Bing,
Yang Xinlin,
Huang Wenqiang
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24994
Subject(s) - polysulfone , chelation , membrane , chemistry , adsorption , hydrolysis , thiourea , hydrochloric acid , affinity chromatography , nuclear chemistry , polymer chemistry , inorganic chemistry , chromatography , organic chemistry , biochemistry , enzyme
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 Hg 2+ cations through the coordination of the mercapto group and Hg 2+ 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 Hg 2+ , 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 Hg 2+ cations were 398 and 403 μg/cm 2 per membrane, respectively, which demonstrated that the resultant polymer membrane was a highly efficient affinity chromatography for Hg 2+ . The affinity membrane containing mercapto group can be conveniently recovered by dilute hydrochloric acid for coordination of Hg 2+ cations, which would have wide application for the treatment of waste water containing heavy metal cations. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2514–2522, 2007