| 交联壳聚糖树脂吸附Cu2+的机理研究 |
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| 引用本文： | 袁彦超,石光,陈炳稔,王瑞香.交联壳聚糖树脂吸附Cu2+的机理研究[J].离子交换与吸附,2004,20(3):223-230. |
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| 作者姓名： | 袁彦超 石光 陈炳稔 王瑞香 |
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| 作者单位： | 华南师范大学化学系,广州,510631 |
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| 摘 要： | 研究了甲醛、环氧氯丙烷交联壳聚糖(AECTS)对Cu2+的吸附热力学行为,用FTIR对吸附产物进行了结构表征,并研究了溶液中介质种类的不同对Cu2+吸附量的影响.结果表明AECTS主要以配位形式吸附Cu2+;AECTS对Cu2+的吸附符合Langmuir等温方程,属于单分子层吸附;吸附为自发的、吸热的熵增加过程;同时不同介质对树脂吸附Cu2+的影响大小顺序为HCl＞CdCl2＞MgCl2＞NaCl,并对其作用机理进行了探讨.
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| 关 键 词： | 交联壳聚糖 Cu^2＋ 吸附机理 介质 |
| 文章编号： | 1001-5493(2004)03-0223-08 |
| 修稿时间： | 2003年10月8日 |
THE MECHANISM OF CROSSLINKED CHITOSAN ADSORBING Cu2+ |
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| YUAN Yanchao,SHI Guang,CHEN Bingren,WAN Ruixiang.THE MECHANISM OF CROSSLINKED CHITOSAN ADSORBING Cu2+[J].Ion Exchange and Adsorption,2004,20(3):223-230. |
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| Authors: | YUAN Yanchao SHI Guang CHEN Bingren WAN Ruixiang |
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| Institution: | YUAN Yanchao SHI Guang CHEN Bingren WAN Ruixiang Department of Chemistry,South China Normal University,Guangzhou 510631,China |
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| Abstract: | In this paper the adsorption thermodynamics properties of chitosan crosslinked by aldehyde and epichlorohydrin (AECTS) with Cu2+ were investigated. The structure of adsorption products was characterized by Fourier transforms IR. The influence of different media on adsorption was studied. The results show that AECTS adsorbed Cu2+ mainly by complication, the experimental data fit well into the Langmuir adsorption isotherm and the process obeyed the formation of monolayer adsorption. The adsorption is a spontaneous endothermic process of increased entropy. The effect order of media is HCl>CdCl2>MgCl2>NaCl, and their effect mechanism was analyzed and explained. |
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| Keywords: | Crosslinked chitosan Cu2+ Adsorption mechanism Media |
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