Comparison of strontium and calcium adsorption onto composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine

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	Comparison of strontium and calcium adsorption onto composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine
	Ye, Xiushen1,2 ; Liu, Tengyun 1,2; Li, Quan1 ; Liu, Haining1,2 ; Wu, Zhijian1,3
	2008-11-20
发表期刊	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷号	330 期号:1 页码:21-27
关键词	Strontium Calcium Composite Magnetic Particle Adsorption Separation Factor
摘要	The adsorption of strontium and calcium ions by composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine (TSPA) were comparatively studied. The effects of initial solution pH, ionic strength, initial strontium and calcium ion concentration, and temperature on the equilibrium adsorption amount of both strontium and calcium ions, and on the separation factor between strontium and calcium ions were investigated comprehensively. The adsorption occurs rapidly in the first 30 min. In general, the equilibrium adsorption amount of both strontium and calcium ions was found to increase with the increase in initial ion concentration and initial solution pH, but to decrease gradually with the increase in ionic strength. The equilibrium adsorption amount of strontium ions increases with the increase in adsorption temperature. However, the effect of temperature on the adsorption of calcium ions presents a complicated situation. Strontium ions have a higher affinity to the composite particles than calcium ions. The separation factor between strontium and calcium ions increases with the increase in adsorption temperature, but is not sensitive to ionic strength. The suitable experimental conditions for the separation between strontium and calcium ions are: initial solution pH 7-8, lower ionic strength. and higher adsorption temperature. (C) 2008 Elsevier B.V. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5851
专题	青海盐湖研究所知识仓储盐湖资源与化学实验室
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Huaqiao Univ, Coll Mat Sci & Engn, Quanzhou 362021, Peoples R China
推荐引用方式 GB/T 7714	Ye, Xiushen,Liu, Tengyun,Li, Quan,et al. Comparison of strontium and calcium adsorption onto composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2008,330(1):21-27.
APA	Ye, Xiushen,Liu, Tengyun,Li, Quan,Liu, Haining,&Wu, Zhijian.(2008).Comparison of strontium and calcium adsorption onto composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,330(1),21-27.
MLA	Ye, Xiushen,et al."Comparison of strontium and calcium adsorption onto composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 330.1(2008):21-27.