Removal of Cu2+, Cd2+ and Pb2+ from aqueous solutions by magnetic alginate microsphere based on Fe3O4/MgAl-layered double hydroxide
文献类型：期刊论文
| 作者 | Pei, Zhiguo ; Chen, Yan; Yu, Haiqin; Yan, Liangguo; Du, Bin; Sun, Junhao
|
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2018-12-15 |
| 卷号 | 532页码:474-484 |
| ISSN号 | 0021-9797 |
| 关键词 | Magnetite Alginate microsphere Column experiment Heavy metals Adsorption mechanisms |
| 文献子类 | Article |
| 英文摘要 | In this work, the magnetic alginate microsphere of Fe3O4/MgAl-LDH (Fe3O4/LDH-AM) was prepared by immobilizing the Fe3O4/LDH with calcium alginate (CA) and was used to remove Cd2+, Pb2+, and Cu2+ from aqueous solutions. The obtained Fe3O4/LDH-AM was characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller surface area determination. The results indicated that the surface groups of the alginate and LDH were retained and so was the crystal structure in the alginate microsphere. The adsorption performance of the Fe3O4/LDH-AM for Cd2+, Pb2+, and Cu2+ in aqueous solutions was evaluated by batch and column adsorption experiments. The effects of adsorption conditions, kinetics, isotherms, mechanisms, and potential applications were investigated. The adsorption kinetic data conformed to the pseudo-second-order kinetic equation, and the isotherm data fit well with the Freundlich and Langmuir isotherm models. The adsorption mechanism of Cd2+, Pb2+, and Cu2+ by the Fe3O4/LDH-AM entailed complexation and precipitation. The experimental breakthrough curves were correlated with the Thomas model. Moreover, the Fe3O4/LDH-AM displayed superior regeneration and reusability. These results suggest that the Fe3O4/LDH-AM is an efficient adsorbent for the removal of heavy metals and can be effectively employed in practical applications. (C) 2018 Elsevier Inc. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41031]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Pei, Zhiguo,Chen, Yan,Yu, Haiqin,et al. Removal of Cu2+, Cd2+ and Pb2+ from aqueous solutions by magnetic alginate microsphere based on Fe3O4/MgAl-layered double hydroxide[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,532:474-484. |
| APA | Pei, Zhiguo,Chen, Yan,Yu, Haiqin,Yan, Liangguo,Du, Bin,&Sun, Junhao.(2018).Removal of Cu2+, Cd2+ and Pb2+ from aqueous solutions by magnetic alginate microsphere based on Fe3O4/MgAl-layered double hydroxide.JOURNAL OF COLLOID AND INTERFACE SCIENCE,532,474-484. |
| MLA | Pei, Zhiguo,et al."Removal of Cu2+, Cd2+ and Pb2+ from aqueous solutions by magnetic alginate microsphere based on Fe3O4/MgAl-layered double hydroxide".JOURNAL OF COLLOID AND INTERFACE SCIENCE 532(2018):474-484. |
入库方式： OAI收割
来源：生态环境研究中心
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