Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads

›› 2009, Vol. 17 ›› Issue (6): 960-966.

Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads

黄国林¹, 杨婥¹, 章凯¹, SHI Jeffrey²

1. Key Laboratory of Nuclear Resources and Environment of Ministry of Education, East China Institute of Technology, Jiangxi 344000, China;
2. School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney 2006, Australia

收稿日期:2009-02-18 修回日期:2009-04-21 出版日期:2009-12-28 发布日期:2009-12-28
通讯作者: HUANG Guolin,E-mail:guolinhuang@sina.com

Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads

HUANG Guolin¹, YANG Chuo¹, ZHANG Kai¹, SHI Jeffrey²

1. Key Laboratory of Nuclear Resources and Environment of Ministry of Education, East China Institute of Technology, Jiangxi 344000, China;
2. School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney 2006, Australia

Received:2009-02-18 Revised:2009-04-21 Online:2009-12-28 Published:2009-12-28

摘要/Abstract

摘要： The performance of cross-linked magnetic chitosan,coated with magnetic fluids and cross-linked with epichlorohydrin,was investigated for the adsorption of copper(Ⅱ) from aqueous solutions.Infrared spectra of chitosan before and after modification showed that the coating and cross-linking are effective.Experiments were performed at different pH of solution and contact time,and appropriate conditions for the adsorption of Cu(II) were determined.Experimental equilibrium data were correlated with Langmuir and Freundlich isotherms for determination of the adsorption potential.The results showed that the Langmuir isotherm was better compared with the Freundlich isotherm,and the uptake of Cu(Ⅱ) was 78.13 mg·g^-1.The kinetics of adsorption corresponded with the first-order Langergren rate equation,and Langergren rate constants were determined.

关键词: adsorption of copper(Ⅱ), cross-linked magnetic chitosan, Langmuir isotherm, Langergren rate equation

Abstract: The performance of cross-linked magnetic chitosan,coated with magnetic fluids and cross-linked with epichlorohydrin,was investigated for the adsorption of copper(II) from aqueous solutions.Infrared spectra of chitosan before and after modification showed that the coating and cross-linking are effective.Experiments were performed at different pH of solution and contact time,and appropriate conditions for the adsorption of Cu(II) were determined.Experimental equilibrium data were correlated with Langmuir and Freundlich isotherms for determination of the adsorption potential.The results showed that the Langmuir isotherm was better compared with the Freundlich isotherm,and the uptake of Cu(II) was 78.13 mg·g^-1.The kinetics of adsorption corresponded with the first-order Langergren rate equation,and Langergren rate constants were determined.

Key words: adsorption of copper(Ⅱ), cross-linked magnetic chitosan, Langmuir isotherm, Langergren rate equation

黄国林, 杨婥, 章凯, SHI Jeffrey. Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads[J]. , 2009, 17(6): 960-966.

HUANG Guolin, YANG Chuo, ZHANG Kai, SHI Jeffrey. Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads[J]. , 2009, 17(6): 960-966.

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Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads

Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads

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