Removal of calcium and magnesium from LiHCO3 solutions for preparation of high-purity Li2CO3 by ion-exchange resin

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 青海盐湖研究所知识仓储

	Removal of calcium and magnesium from LiHCO3 solutions for preparation of high-purity Li2CO3 by ion-exchange resin
	Yi, Wen-tao 1; Yan, Chun-yan 1; Ma, Pei-hua 2
刊名	DESALINATION
	2009-12-15
卷号	249 期号:2 页码:729-735
关键词	Removal Ion Exchange Lihco3 Solution Batch Study Column Operation
文献子类	Article
英文摘要	This paper describes the results from an experimental study of the purification of LiHCO3 solution which is used to produce high-purity Li2CO3 by ion exchange. Generally. there are some amounts of Ca2+ and Mg2+ in the LiHCO3 solution whose contents exceed the requirements to produce qualified high-purity Li2CO3, so they need to be removed from the solution. There are many methods available to remove divalent metal ions from solutions, among which the ion exchange is the most simple and efficient one. Investigations of the performance of the chelating resin Amberlite IRC747 for its adsorption for Ca2+ and Mg2+ in LiHCO3 solutions were conducted. Batch studies showed that the SDM-A model could describe the adsorption isotherm data well, and the Karman particle diffusion model could describe the exchange kinetics properly. The study for column operation showed that breakthrough points of Ca2+ and Mg2+ both advanced with increasing the feed flow rate, and the penetration function model could describe the effluent curves adequately. HCl and LiOH of 1 mol . L-1 respectively were used to regenerate resins with good effect. This study will provide the basic reference for process operation and the reactor design to purify the LiHCO3 solution by ion exchange. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词	ADSORPTION ; KINETICS
WOS研究方向	Engineering ; Water Resources
语种	英语
WOS记录号	WOS:000272015800044
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/5881]
专题	青海盐湖研究所_青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Zaozhuang Univ, Dept Chem & Chem Engn, Zaozhuang 277160, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Yi, Wen-tao,Yan, Chun-yan,Ma, Pei-hua. Removal of calcium and magnesium from LiHCO3 solutions for preparation of high-purity Li2CO3 by ion-exchange resin[J]. DESALINATION,2009,249(2):729-735.
APA	Yi, Wen-tao,Yan, Chun-yan,&Ma, Pei-hua.(2009).Removal of calcium and magnesium from LiHCO3 solutions for preparation of high-purity Li2CO3 by ion-exchange resin.DESALINATION,249(2),729-735.
MLA	Yi, Wen-tao,et al."Removal of calcium and magnesium from LiHCO3 solutions for preparation of high-purity Li2CO3 by ion-exchange resin".DESALINATION 249.2(2009):729-735.