New insights into the sorption mechanism of cadmium on red mud

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	New insights into the sorption mechanism of cadmium on red mud
	Luo, Lei ; Ma, Chenyan ; Ma, Yibing ; Zhang, Shuzhen ; Lv, Jitao ; Cui, Mingqi
刊名	ENVIRONMENTAL POLLUTION
	2011-05-01
卷号	159 期号:5 页码:1108—1113
中文摘要	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.
WOS记录号	WOS:000290192400012
公开日期	2012-10-18
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7080]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Luo, Lei,Ma, Chenyan,Ma, Yibing,et al. New insights into the sorption mechanism of cadmium on red mud[J]. ENVIRONMENTAL POLLUTION,2011,159(5):1108—1113.
APA	Luo, Lei,Ma, Chenyan,Ma, Yibing,Zhang, Shuzhen,Lv, Jitao,&Cui, Mingqi.(2011).New insights into the sorption mechanism of cadmium on red mud.ENVIRONMENTAL POLLUTION,159(5),1108—1113.
MLA	Luo, Lei,et al."New insights into the sorption mechanism of cadmium on red mud".ENVIRONMENTAL POLLUTION 159.5(2011):1108—1113.