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Removal of calcium and magnesium from LiHCO3 solutions for preparation of high-purity Li2CO3 by ion-exchange resin
Yi, Wen-tao1; Yan, Chun-yan1; Ma, Pei-hua2
2009-12-15
Source PublicationDESALINATION
Volume249Issue:2Pages:729-735
SubtypeArticle
AbstractThis 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.
KeywordRemoval Ion Exchange Lihco3 Solution Batch Study Column Operation
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS KeywordADSORPTION ; KINETICS
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000272015800044
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5881
Collection青海盐湖研究所知识仓储
Affiliation1.Zaozhuang Univ, Dept Chem & Chem Engn, Zaozhuang 277160, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
Recommended Citation
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.
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