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| Adsorption of copper（ Ⅱ ） and chromium（Ⅵ） on diaspore | |
| 引用本文： | 刘晓文,王建绒,胡岳华. Adsorption of copper（ Ⅱ ） and chromium（Ⅵ） on diaspore[J]. 中南工业大学学报(英文版), 2008, 15(4): 515-519. DOI: 10.1007/s11771-008-0097-5 |
| 作者姓名： | 刘晓文 王建绒 胡岳华 |
| 作者单位： | School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China |
| 基金项目： | Foundation item： Project（2005CB623701） supported by the Major State Basic Research Development Program of China |
| 摘 要： | The adsorption of Cu（ Ⅱ ） and Cr（Ⅵ） on diaspore was studied with the help of X-ray diffraction analysis, BET measurement, zeta potential measurement and atomic adsorption spectrometry. The adsorption equilibrium almost reaches within 60 min. The adsorption isotherms of Cu（ Ⅱ ） and Cr（Ⅵ） could be well described by the Langmuir equation. The adsorption capacities of Cu（Ⅱ） and Cr（Ⅵ） are 1.944 and 1.292 mg/g, respectively. The adsorption percentage of Cr（Ⅱ ） increases with the increment of solution pH, but the adsorption percentage of Cr（Ⅵ） decreases. This could be explained by zeta potential theoretical and electrostatic attraction between metal ions and diaspore surface. |
| 关 键 词： | 水铝石 吸附作用 铬元素 电位 |
| 收稿时间： | 2006-07-24 |
Adsorption of copper(II) and chromium(VI) on diaspore |
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| Xiao-wen Liu, Jian-rong Wang and Yue-hua Hu. Adsorption of copper(II) and chromium(VI) on diaspore[J]. Journal of Central South University of Technology, 2008, 15(4): 515-519. DOI: 10.1007/s11771-008-0097-5 | |
| Authors: | Xiao-wen Liu Jian-rong Wang Yue-hua Hu |
| Affiliation: | (1) School of Resources Processing and Bioengineering, Central South University, Changsha, 410083, China |
| Abstract: | The adsorption of Cu(II) and Cr(VI) on diaspore was studied with the help of X-ray diffraction analysis, BE measurement, zeta potential measurement and atomic adsorption spectrometry. The adsorption equilibrium almost reaches within 60 min. The adsorption isotherms of Cu(II) and Cr(VI) could be well described by the Langmuir equation. The adsorption capacities o Cu(II) and Cr(VI) are 1.944 and 1.292 mg/g, respectively. The adsorption percentage of Cr(II) increases with the increment solution pH, but the adsorption percentage of Cr(VI) decreases. This could be explained by zeta potential theoretical and electrostatic attraction between metal ions and diaspore surface. Foundation item: Project(2005CB623701) supported by the Major State Basic Research Development Program of China |
| Keywords: | diaspore adsorption copper(II) chromium(VI) zeta potentia |
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