| 改性磁性壳聚糖微球对Cu2+、Cd2+和Ni2+的吸附性能 |
| |
| 引用本文： | 周利民,王一平,黄群武,刘峙嵘.改性磁性壳聚糖微球对Cu2+、Cd2+和Ni2+的吸附性能[J].物理化学学报,2007,23(12):1979-1984. |
| |
| 作者姓名： | 周利民 王一平 黄群武 刘峙嵘 |
| |
| 作者单位： | College of Chemistry and Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China; Key Laboratory of Nuclear Resources and Environment of the Education Ministry, East China Institute of Technology, Fuzhou 344000, Jiangxi Province, P. R. China |
| |
| 基金项目： | 国家留学回国人员科研启动基金;东华理工大学核资源与环境工程技术中心开放测试基金 |
| |
| 摘 要： | Fe3O4/ chitosan magnetic microspheres of 50 to 80 滋m were prepared using the inverse phase emulsion dispersion and chemical crosslinking technology, and then modified with ethylenediamine for use in the adsorption of heavy metal ions. The adsorption properties of the modified Fe3O4/chitosan toward Cu2+, Cd2+ and Ni2+ were investigated. It was found that the adsorption capacities of Cu2+ and Ni2+ increased with pH, and a maximum adsorption for Cd2+ occurred at pH=3. The saturated adsorption capacities calculated by Langmuir isotherms were 54.3 mg·g-1 for Cu2+, 20.4 mg·g-1 for Cd2+, and 12.4 mg·g-1 for Ni2+, respectively. The adsorption kinetics were well described by pseudo-second-order equation models. The experimental results showed that the Fe3O4/chitosan modified with ethylenediamine presented higher adsorption selectivity for Cu2+ than for Cd2+ and Ni2+ in all studied pH ranges.
|
| 关 键 词： | 壳聚糖 乙二胺 金属离子 吸附 动力学 |
| 收稿时间： | 2007-07-02 |
| 修稿时间： | 2007-09-11 |
Adsorption Properties of Cu2+, Cd2+ and Ni2+ by Modified Magnetic Chitosan Microspheres |
| |
| ZHOU Li-Min,WANG Yi-Ping,UANG Qun-Wu,IU Zhi-Rong.Adsorption Properties of Cu2+, Cd2+ and Ni2+ by Modified Magnetic Chitosan Microspheres[J].Acta Physico-Chimica Sinica,2007,23(12):1979-1984. |
| |
| Authors: | ZHOU Li-Min WANG Yi-Ping UANG Qun-Wu IU Zhi-Rong |
| |
| Institution: | College of Chemistry and Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China; Key Laboratory of Nuclear Resources and Environment of the Education Ministry, East China Institute of Technology, Fuzhou 344000, Jiangxi Province, P. R. China |
| |
| Abstract: | |
| |
| Keywords: | Chitosan Ethylenediamine Metal ions Adsorption Kinetic |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
|
