Pyromellitic dianhydride-modified beta-cyclodextrin microspheres for Pb(II) and Cd(II) adsorption

IMR OpenIR

	Pyromellitic dianhydride-modified beta-cyclodextrin microspheres for Pb(II) and Cd(II) adsorption
	F. Y. Li; X. M. Sun; H. Zhang; B. H. Li; F. X. Gan
	2007
发表期刊	Journal of Applied Polymer Science
ISSN	0021-8995
卷号	105 期号:6 页码:3418-3425
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.
部门归属	s cent univ natl, coll chem & mat sci, key lab analyt chem state ethn affairs commiss, wuhan 430074, peoples r china. wuhan univ, coll resources & environm sci, wuhan 430072, peoples r china. wuhan univ, coll chem & mol sci, wuhan 430072, peoples r china. state key lab corros & protect met, shenyang 110015, peoples r china.;li, bh (reprint author), s cent univ natl, coll chem & mat sci, key lab analyt chem state ethn affairs commiss, wuhan 430074, peoples r china;libuhai1946@163.com
关键词	Beta-cyclodextrin Pyromellitic Dianhydride Modification Microspheres Adsorption Metal-ions Aqueous-solutions Heavy-metals Biosorption Removal Beads Methacrylate) Extraction Adsorbent Kinetics
URL	查看原文
WOS记录号	WOS:000248320000032
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33626
专题	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.