Removal of Cd(2+) from aqueous solutions by hydroxyapatite
文献类型：期刊论文
| 作者 | Zhu, Ronghai1; Yu, Ranbo2; Yao, Jianxi1; Mao, Dan1; Xing, Chaojian1; Wang, Dan1 |
| 刊名 | CATALYSIS TODAY
 |
| 出版日期 | 2008-12-15 |
| 卷号 | 139期号:1-2页码:94-99 |
| 关键词 | Hydroxyapatite Cd(2+) Sorption Desorption |
| ISSN号 | 0920-5861 |
| 其他题名 | Catal. Today |
| 中文摘要 | A study on the removal of cadmium ions from aqueous solutions by synthetic hydroxyapatite (Ca(10)(PO(4))(6)(OH)(2), HAP) with different morphologies was conducted in batch conditions. The influence of different sorption parameters, such as equilibration time, initial concentration of metal ion, the amount of HAP, pH value of solution and the specific surface area on the sorption amount of Cd(2+) were studied and discussed. Our experimental results are in agreement with pseudo-second-order kinetic equation. The Freundlich and Langmuir adsorption isotherms, often used to describe the sorption of solutes from a liquid phase, can be applied to our experimental results. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, X(m), was found to be 260.42 mg/g. The sorption amount of Cd(2+) increased as the pH value enhanced from 5 to 8. The ion-exchange mechanism and surface complex mechanism may both exist in the adsorption process. Nearly linear dependence between Cd(2+) sorption amount and specific surface area within a certain range has been confirmed. Cd(2+) desorption amount decreased with the increasing pH value of the extracting solution. (C) 2008 Elsevier B.V. All rights reserved. |
| 英文摘要 | A study on the removal of cadmium ions from aqueous solutions by synthetic hydroxyapatite (Ca(10)(PO(4))(6)(OH)(2), HAP) with different morphologies was conducted in batch conditions. The influence of different sorption parameters, such as equilibration time, initial concentration of metal ion, the amount of HAP, pH value of solution and the specific surface area on the sorption amount of Cd(2+) were studied and discussed. Our experimental results are in agreement with pseudo-second-order kinetic equation. The Freundlich and Langmuir adsorption isotherms, often used to describe the sorption of solutes from a liquid phase, can be applied to our experimental results. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, X(m), was found to be 260.42 mg/g. The sorption amount of Cd(2+) increased as the pH value enhanced from 5 to 8. The ion-exchange mechanism and surface complex mechanism may both exist in the adsorption process. Nearly linear dependence between Cd(2+) sorption amount and specific surface area within a certain range has been confirmed. Cd(2+) desorption amount decreased with the increasing pH value of the extracting solution. (C) 2008 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 研究领域[WOS] | Chemistry ; Engineering |
| 关键词[WOS] | BEHAVIOR ; ADSORPTION ; SORPTION ; CADMIUM ; SURFACE ; CD(II) ; SINGLE ; WATER |
| 收录类别 | SCI ; ISTP |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000261325800016 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2933]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase Complex Syst, Beijing 100080, Peoples R China 2.Univ Sci & Technol, Dept Phys Chem, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Ronghai,Yu, Ranbo,Yao, Jianxi,et al. Removal of Cd(2+) from aqueous solutions by hydroxyapatite[J]. CATALYSIS TODAY,2008,139(1-2):94-99. |
| APA | Zhu, Ronghai,Yu, Ranbo,Yao, Jianxi,Mao, Dan,Xing, Chaojian,&Wang, Dan.(2008).Removal of Cd(2+) from aqueous solutions by hydroxyapatite.CATALYSIS TODAY,139(1-2),94-99. |
| MLA | Zhu, Ronghai,et al."Removal of Cd(2+) from aqueous solutions by hydroxyapatite".CATALYSIS TODAY 139.1-2(2008):94-99. |
入库方式： OAI收割
来源：过程工程研究所
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