Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat

	Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat
	Qin, F; Wen, B; Shan, XQ; Xie, YN; Liu, T; Zhang, SZ; Khan, SU; Xie YN(谢亚宁); Liu T(刘涛)
刊名	ENVIRONMENTAL POLLUTION
	2006
卷号	144 期号:2 页码:669-680
关键词	peat heavy metals competitive adsorption kinetics X-ray absorption spectroscopy
通讯作者	Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China ; Beijing Union Univ, Coll Art & Sci, Dept Biol, Beijing 100049, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100049, Peoples R China ; George Mason Univ, Dept Chem & Biochem, Fairfax, VA 22030 USA
英文摘要	Combined use of batch equilibration adsorption and X-ray absorption spectroscopy (XAS) was employed to study the mechanisms of competitive adsorption of Ph, Cu, and Cd on Danish and Heilongjiang peat in single- and multi-solute systems. The adsorption capacity and initial adsorption rate on the same peat in single-solute systems followed the order Ph > Cu > Cd. Both the adsorbed amount of each metal (q '(m)) and its initial adsorption rate were decreased in multi-solute systems. It was observed that the adsorbed amounts of metals at low-energy adsorption sites (q(m,l)) decreased pronouncedly compared to those at high-energy adsorption sites (q(m,2)), indicating that the competitive adsorption of Ph, Cu and Cd occurred mainly at the low-energy adsorption sites. XAS study revealed that both Ph and Cu were coordinated in peat predominantly to carboxylic moieties without excluding the hydroxyl groups, thereby providing an insight into the mechanism of competitive adsorption of Ph and Cu on peat. (c) 2006 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences & Ecology
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
原文出处	SCI
语种	英语
WOS记录号	WOS:000241574700037
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/238240]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Qin, F,Wen, B,Shan, XQ,et al. Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat[J]. ENVIRONMENTAL POLLUTION,2006,144(2):669-680.
APA	Qin, F.,Wen, B.,Shan, XQ.,Xie, YN.,Liu, T.,...&刘涛.(2006).Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat.ENVIRONMENTAL POLLUTION,144(2),669-680.
MLA	Qin, F,et al."Mechanisms of competitive adsorption of Pb, Cu, and Cd on peat".ENVIRONMENTAL POLLUTION 144.2(2006):669-680.