O-carboxymethyl chitosan entrapped by silica: preparation and adsorption behaviour toward neodymium (III) ions
文献类型：期刊论文
| 作者 | Wang, Fuchun1,2; Zhao, Junmei1; Zhou, Huacong1,2; Li, Wensong1,2; Sui, Na1,2; Liu, Huizhou1 |
| 刊名 | JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 88期号:2页码:317-325 |
| 关键词 | carboxymethyl chitosan silica adsorption neodymium(III) |
| 英文摘要 | BACKGROUND: The recovery of neodymium from dilute solutions has become important because of its wide application in industry. This work reports the preparation of novel carboxymethyl chitosan adsorbents entrapped by silica (SiO2/CMCH) and their application for adsorption of neodymium(III) ions from aqueous solution. RESULTS: The effect of the CMCH content, equilibrium pH (pHe), contact time, initial concentrations of Nd(III) and temperature on the adsorption was investigated. The amount of Nd(III) adsorption increases with increasing pHe, which can be explained by the pH-titration curve of CMCH. Temperature has a positive effect on Nd(III) adsorption, and the amount adsorbed is 53.04 mg g-1 dry adsorbent or 434.75 mg g-1 CMCH at 328 K. Adsorption kinetics and isotherm can be described by the pseudo-second-order model and Langmuir equation. Both complexation and ion exchange mechanisms are believed to play an important role in Nd(III) adsorption, and possible coordination between CMCH and Nd(III) is speculated. Complete desorption can be reached when the concentration of HCl is more than 0.1 mol L-1. CONCLUSION: A novel method was developed to prepare SiO2/CMCH adsorbents through a one-step sol-gel strategy. The prepared adsorbents were biocompatible and non-toxic with a good adsorption ability for Nd(III), and could be used for adsorptive recovery of Nd(III) from aqueous solutions. (c) 2012 Society of Chemical Industry |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology |
| 类目[WOS] | Biotechnology & Applied Microbiology ; Chemistry, Multidisciplinary ; Engineering, Chemical |
| 研究领域[WOS] | Biotechnology & Applied Microbiology ; Chemistry ; Engineering |
| 关键词[WOS] | METAL-IONS ; SEPARATION ; COMPLEXATION ; EXTRACTION ; KINETICS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000313945800018 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13492]  |
| 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, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Fuchun,Zhao, Junmei,Zhou, Huacong,et al. O-carboxymethyl chitosan entrapped by silica: preparation and adsorption behaviour toward neodymium (III) ions[J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,2013,88(2):317-325. |
| APA | Wang, Fuchun,Zhao, Junmei,Zhou, Huacong,Li, Wensong,Sui, Na,&Liu, Huizhou.(2013).O-carboxymethyl chitosan entrapped by silica: preparation and adsorption behaviour toward neodymium (III) ions.JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,88(2),317-325. |
| MLA | Wang, Fuchun,et al."O-carboxymethyl chitosan entrapped by silica: preparation and adsorption behaviour toward neodymium (III) ions".JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 88.2(2013):317-325. |
入库方式： OAI收割
来源：过程工程研究所
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