Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin
文献类型：期刊论文
| 作者 | Xiong, Chunhua1; Yao, Caiping1; Wang, Li1; Ke, Jiajun2 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 98期号:3-4页码:318-324 |
| 关键词 | Gel-type weak acid resin (GTWAR) Cd(II) Adsorption Kinetics Thermodynamics |
| ISSN号 | 0304-386X |
| 通讯作者 | Xiong, CH |
| 英文摘要 | The adsorption and desorption behaviors of Cd(II) on gel-type weak acid resin (GTWAR) have been investigated. The influence of operational conditions such as contact time. initial concentration of Cd(II), initial pH of solution and temperature on the adsorption of Cd(II) has also been examined. The results show that the optimal adsorption condition of GTWAR for Cd(II) is achieved at pH = 5.95 in HAc-NaAc medium. The maximum uptake capacity of Cd(II) is 282 mg/g GTWAR at 298 K. The adsorption of Cd(II) follows the Langmuir isotherm and Freundlich isotherm, and the correlation coefficients have been evaluated. Even kinetics on the adsorption of Cd(II) has been studied. The apparent activation energy E(a) and adsorption rate constant k(298) values are 2.95 kJ/mol and 3.02 x 10(-5) s(-1), respectively. The calculation data of thermodynamic parameters which Delta S value of 110 J/(mol K) and Delta H value of 13.1 kJ/mol indicate the endothermic nature of the adsorption process. Whilst, a decrease of Gibb's free energy (Delta G) with increasing temperature indicates the spontaneous nature of the adsorption process. Finally, Cd(II) can be eluted by using 0.5 mol/L HCl solution and the gel-type weak acid resin can be regenerated and reused. The sample was described by IR spectroscopy and scanning electron micrographs (SEM). (C) 2009 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | ION-EXCHANGE ; METAL-IONS ; SYNTHETIC RESIN ; SORPTION BEHAVIOR ; WASTE-WATER ; FIXED-BED ; FLY-ASH ; REMOVAL ; CU2+ ; NI2+ |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268439800019 |
| 公开日期 | 2013-12-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6594]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Zhejiang Gongshang Univ, Dept Appl Chem, Hangzhou 310035, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, Chunhua,Yao, Caiping,Wang, Li,et al. Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin[J]. HYDROMETALLURGY,2009,98(3-4):318-324. |
| APA | Xiong, Chunhua,Yao, Caiping,Wang, Li,&Ke, Jiajun.(2009).Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin.HYDROMETALLURGY,98(3-4),318-324. |
| MLA | Xiong, Chunhua,et al."Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin".HYDROMETALLURGY 98.3-4(2009):318-324. |
入库方式： OAI收割
来源：过程工程研究所
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