New insights into the sorption mechanism of cadmium on red mud

doi:10.1016/j.envpol.2011.02.019

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	New insights into the sorption mechanism of cadmium on red mud
	Luo, L; Ma CY(马陈燕); Cui MQ(崔明启); Ma, CY; Ma, YB; Zhang, SZ; Lv, JT; Cui, MQ
	2011
发表期刊	ENVIRONMENTAL POLLUTION
卷号	159 期号:5 页码:1108-1113
通讯作者	[Luo, Lei ; Ma, Yibing] Chinese Acad Agr Sci, Minist Agr, Key Lab Plant Nutr & Nutrient Cycling, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China ; [Luo, Lei ; Zhang, Shuzhen ; Lv, Jitao] Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China ; [Ma, Chenyan ; Cui, Mingqi] Chinese Acad Sci, Inst High Energy Phys, State Key Lab Synchrotron Radiat, Beijing 100039, Peoples R China
摘要	Effectiveness and mechanism of cadmium (Cd) sorption on original, acidified and ball milling nanoparticle red muds were investigated using batch sorption experiments, sequential extraction analysis and X-ray absorption near edge structure (XANES) spectroscopy. The maximum sorption capacity of Cd was 0.16, 0.19, and 0.21 mol/kg for the original, acidified, and nano-particle red muds at pH 6.5, respectively. Both acidification and ball-milling treatments significantly enhanced Cd sorption and facilitated transformation of Cd into less extractable fractions. The Cd L(III)-edge XANES analysis indicated the formation of inner-sphere complexes of Cd similar to XCdOH (X represents surface groups on red mud) on the red mud surfaces although outer-sphere complexes of Cd were the primary species. This work shed light on the potential application of red mud to remediate Cd-contaminated soils and illustrated the promising tool of XANES spectroscopy for speciation of multicomponent systems of environmental relevance. (C) 2011 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Cadmium Red mud Sorption XANES Sequential extraction analysis
学科领域	Environmental Sciences & Ecology
DOI	10.1016/j.envpol.2011.02.019
研究领域[WOS]	Environmental Sciences & Ecology
URL	查看原文
语种	英语
WOS类目	Environmental Sciences
WOS记录号	WOS:000290192400012
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/239058
专题	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	Luo, L,Ma CY,Cui MQ,et al. New insights into the sorption mechanism of cadmium on red mud[J]. ENVIRONMENTAL POLLUTION,2011,159(5):1108-1113.
APA	Luo, L.,马陈燕.,崔明启.,Ma, CY.,Ma, YB.,...&Cui, MQ.(2011).New insights into the sorption mechanism of cadmium on red mud.ENVIRONMENTAL POLLUTION,159(5),1108-1113.
MLA	Luo, L,et al."New insights into the sorption mechanism of cadmium on red mud".ENVIRONMENTAL POLLUTION 159.5(2011):1108-1113.

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