Adsorption characteristics of copper(II) ions from aqueous solution onto poly(acrylamide)/attapulgite composite

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	Adsorption characteristics of copper(II) ions from aqueous solution onto poly(acrylamide)/attapulgite composite
	Wang AQ(王爱勤)
刊名	Journal of Hazardous Materials
	2009
卷号	165 期号:1-3 页码:223-231
关键词	Composite Adsorption Cu(II) Kinetics Isotherms
ISSN号	0304-3894
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	Batch adsorption experiments were carried out to remove Cu(II) ions from its aqueous solutions using a poly(acrylamide)/attapulgite composite. The different parameters effecting on the adsorption capacity such as contact time, initial metal ion concentration, temperature and pH of the solution have been investigated. The adsorption kinetic experiments revealed that there are three stages in the whole adsorption process. It was found that Cu(II) adsorption onto the composite followed pseudo-second-order kinetics and were mainly controlled by the film diffusion mechanism, along with a considerable contribution of the intra-particle diffusion mechanism. Analysis of adsorption results obtained at different temperatures showed that the adsorption pattern on the composite well followed the Langmuir, Freundlih and D–R isotherms, and the characteristic parameters for each adsorption isotherm were also determined. The adsorption process has been found endothermic in nature and thermodynamic parameters have been calculated. The analysis for variations of IR spectra and the values of the mean free energies of adsorption (Ea) demonstrated that the chelation model should be the dominating adsorption mechanism. The species of copper salts can affect the adsorption capacity of the composite, which are in the order of CuSO4 > CuCl2 > Cu(NO3)2> Cu(CH3COO)2.
学科主题	功能高分子
收录类别	SCI
资助信息	国家自然科学基金项目(20877077)
语种	英语
公开日期	2012-09-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/150]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
推荐引用方式 GB/T 7714	Wang AQ. Adsorption characteristics of copper(II) ions from aqueous solution onto poly(acrylamide)/attapulgite composite[J]. Journal of Hazardous Materials,2009,165(1-3):223-231.
APA	王爱勤.(2009).Adsorption characteristics of copper(II) ions from aqueous solution onto poly(acrylamide)/attapulgite composite.Journal of Hazardous Materials,165(1-3),223-231.
MLA	王爱勤."Adsorption characteristics of copper(II) ions from aqueous solution onto poly(acrylamide)/attapulgite composite".Journal of Hazardous Materials 165.1-3(2009):223-231.