| Heavy Metal Removal from Water by Adsorption Using Pillared Montmorillonite |
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| 作者姓名： | LIU Yun WU Pingxiao DANG Zhi YE Daiqi |
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| 作者单位： | College of Environmental Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640 |
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| 基金项目： | 中国科学院资助项目;广东省博士启动基金 |
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| 摘 要： | Removal of Cu^2＋, Cr^3＋ and Cd^2＋ from aqueous solutions by adsorption on montmorillonite modified by sodium dodecylsulfate （SDS） and hydroxy-alumino-silicate （HAS） was investigated. Experiments were carried out as a function of solution pH, solute concentration, and time. The Langmuir model was adopted to describe the single-solute adsorption isotherm, in which the Langmuir parameters were directly taken from those obtained in single-solute systems. The kinetics of metal ions adsorption was examined and the pseudo-first-order rate constant was finally evaluated.
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| 关 键 词： | 蒙脱石 金属离子 吸附作用 朗缪尔模型 |
| 收稿时间： | 2005-10-18 |
| 修稿时间： | 2006-02-17 |
Heavy Metal Removal from Water by Adsorption Using Pillared Montmorillonite |
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| Authors: | LIU;Yun;WU;Pingxiao;DANG;Zhi;YE;Daiqi |
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| Abstract: | Removal of Cu2+, Cr3+ and Cd2+ from aqueous solutions by adsorption on montmorillonite modified by sodium dodecylsulfate (SDS) and hydroxy-alumino-silicate (HAS) was investigated. Experiments were carried out as a function of solution pH, solute concentration, and time. The Langmuir model was adopted to describe the single-solute adsorption isotherm, in which the Langmuir parameters were directly taken from those obtained in single-solute systems. The kinetics of metal ions adsorption was examined and the pseudo-first-order rate constant was finally evaluated. |
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| Keywords: | sodium dodecylsulfate hydroxyaluminosilicate montmorillonite metal ions adsorption Langmuir model kinetics |
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