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Chemcial Industry and Engineering 2010, Vol. 27 Issue (2) :132-137    DOI:
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Synthesis and Adsorption Properties of the Crosslinked Chitosan Resins Supported by SiO_2
GAO Chun-juan,WANG Li-cong,LIU Luo-feng,ZHANG Yu-shan(Institute of Tianjin Seawater Desalination and Multipurpose Utilization,State Oceanic Administration,Tianjin 300192,China)
(Institute of Tianjin Seawater Desalination and Multipurpose Utilization,State Oceanic Administration,Tianjin 300192,China

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Abstract A series of crosslinked chitosan resins supported by SiO_2 were synthesized with chitosan and SiO_(2).The structures of the crosslinked chitosan resins were analyzed with infrared(IR) spectroscopy,X-ay diffraction(XRD) and scanning electron microscopy(SEM).The adsorption capacities of the above resins for Au(��) and Ag(��) were also studied.The effects of factors such as amounts of crosslinked agents,media pH value and original ion concentration on the adsorption rate of the above resins were investigated emphatically.The results indicate that the resin has good adsorption effect on Au(��) and Ag(��).For Au(��),the maximum adsorption rate can be obtained when pH=4,adsorption time is 90 min.For Ag(��),the maximum adsorption rate can be obtained when pH=4��6,adsorption time is 100 min.The original ion concentration has less impact on adsorption rate.
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Received 2010-03-15; published 2010-03-15
Cite this article:   
GAO Chun-juan,WANG Li-cong,LIU Luo-feng,ZHANG Yu-shan.Synthesis and Adsorption Properties of the Crosslinked Chitosan Resins Supported by SiO_2[J]  Chemcial Industry and Engineering, 2010,V27(2): 132-137
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