Pyromellitic dianhydride-modified beta-cyclodextrin microspheres for Pb(II) and Cd(II) adsorption
文献类型：期刊论文
| 作者 | F. Y. Li ; X. M. Sun ; H. Zhang ; B. H. Li ; F. X. Gan |
| 刊名 | Journal of Applied Polymer Science
 |
| 出版日期 | 2007 |
| 卷号 | 105期号:6页码:3418-3425 |
| 关键词 | beta-cyclodextrin pyromellitic dianhydride modification microspheres adsorption metal-ions aqueous-solutions heavy-metals biosorption removal beads methacrylate) extraction adsorbent kinetics |
| ISSN号 | 0021-8995 |
| 中文摘要 | In this work, the pyromellitic dianhydride (PMDA)-grafted P-cyclodextrin (P-CD) microspheres have been prepared for the removal of lead and cadmium metal ions in aqueous solution by a batch-equilibration technique. The effects of the pH of the solution, contact time, and initial metal concentration were studied. The adsorption capacities for the two metal ions increase significantly as a large number of carboxyl groups are present on the microspheres surface. The equilibrium process is better described by the Langmuir isotherm than the Freundlich isotherm. The maximum adsorption capacities are 135.69 and 92.85 mg g(-1) for Pb(II) and Cd(II), respectively. Kinetic studies show good correlation coefficients for a pseudosecond-order kinetic model, confirming that the sorption rate is controlled by chemical adsorption. The regeneration of the adsorbent can be carried out by treating the loaded microspheres with 0.2 (mol L-1) HCl obtaining high desorption rate for the two metal ions. (C) 2007 Wiley Periodicals, Inc. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33626]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | F. Y. Li,X. M. Sun,H. Zhang,et al. Pyromellitic dianhydride-modified beta-cyclodextrin microspheres for Pb(II) and Cd(II) adsorption[J]. Journal of Applied Polymer Science,2007,105(6):3418-3425. |
| APA | F. Y. Li,X. M. Sun,H. Zhang,B. H. Li,&F. X. Gan.(2007).Pyromellitic dianhydride-modified beta-cyclodextrin microspheres for Pb(II) and Cd(II) adsorption.Journal of Applied Polymer Science,105(6),3418-3425. |
| MLA | F. Y. Li,et al."Pyromellitic dianhydride-modified beta-cyclodextrin microspheres for Pb(II) and Cd(II) adsorption".Journal of Applied Polymer Science 105.6(2007):3418-3425. |
入库方式： OAI收割
来源：金属研究所
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