Chemically modified kapok fiber for fast adsorption of Pb2+, Cd2+, Cu2+ from aqueous solution

doi:10.1007/s10570-013-9875-9

CORC > 化学研究所 > 中国科学院化学研究所

	Chemically modified kapok fiber for fast adsorption of Pb2+, Cd2+, Cu2+ from aqueous solution
	Duan, Chunting 1,2; Zhao, Ning 1; Yu, Xiaolan 1; Zhang, Xiaoyan 1; Xu, Jian 1
刊名	CELLULOSE
	2013-04-01
卷号	20 期号:2 页码:849-860
关键词	Kapok Fiber Chemical Modification Fast Adsorption Regeneration
ISSN号	0969-0239
DOI	10.1007/s10570-013-9875-9
英文摘要	Kapok fiber, a natural hollow fiber with thin shell and large cavity, has rarely been used as adsorbent for heavy metal ions. In this paper, kapok fibers were modified with diethylenetriamine pentaacetic acid (DTPA) after hydrophilicity treatment. The adsorption behavior of the resultant kapok-DTPA influenced by pH, adsorption time and initial concentration of metal ion was investigated. The results demonstrate that adsorption equilibrium was reached within 2 min for Pb2+ and Cd2+. Adsorption kinetics showed that the adsorption rate was well fitted by pseudo-second-order rate model. The adsorption isotherms were studied, and the best fit was obtained in the Langmuir model. The maximum adsorption capacities of kapok-DTPA were 310.6 mg g(-1) for Pb2+, 163.7 mg g(-1) for Cd2+, 101.0 mg g(-1) for Cu2+, respectively. After eight desorption and re-adsorption loops, the lost adsorption capacities for Pb2+ and Cu2+ were less than 10 %. Because of the large specific area derived from the hollow fiber structure, kapok-DTPA exhibited much better adsorption capacity compared with many other reported adsorbents based on natural materials.
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000315480400025
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54279]
专题	中国科学院化学研究所
通讯作者	Zhao, Ning
作者单位	1.Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Duan, Chunting,Zhao, Ning,Yu, Xiaolan,et al. Chemically modified kapok fiber for fast adsorption of Pb2+, Cd2+, Cu2+ from aqueous solution[J]. CELLULOSE,2013,20(2):849-860.
APA	Duan, Chunting,Zhao, Ning,Yu, Xiaolan,Zhang, Xiaoyan,&Xu, Jian.(2013).Chemically modified kapok fiber for fast adsorption of Pb2+, Cd2+, Cu2+ from aqueous solution.CELLULOSE,20(2),849-860.
MLA	Duan, Chunting,et al."Chemically modified kapok fiber for fast adsorption of Pb2+, Cd2+, Cu2+ from aqueous solution".CELLULOSE 20.2(2013):849-860.