Research progress of ionic liquid-based extraction separation of lithium from brine

被引：0
|
作者：
Bai R. [1 ,2 ]
Wang J. [1 ]
Wang D. [1 ]
Zhang Y. [1 ,3 ]
机构：
[1] Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
[2] College of Sino-Danish, University of Chinese Academy of Sciences, Beijing
[3] Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 06期
关键词：
Ion exchange; Ionic liquids; Lithium in salt lake; Mechanism; Separation; Solvent extraction;
D O I：
10.16085/j.issn.1000-6613.2020-1379
中图分类号：
学科分类号：
摘要：
In recent years, the rapid development of lithium battery industry has attracted widespread attention to the development and utilization of lithium resources, especially the brine lithium resources. Ionic liquid (IL) as a new type of green organic solvent, which is composed of anions and cations, exhibits unique physical and chemical properties, and brings new opportunities for optimizing and upgrading traditional solvent extraction method to extract lithium from brine. In this paper, the development history of ionic liquid-based extraction systems for lithium separation from salt lake brine was briefly reviewed firstly. Then, the behavior and performance of lithium extraction with ionic liquid as diluent, extractant or co-extractant were reviewed and discussed. In addition, the extraction mechanisms are elaborated in detail. Other IL-based lithium recovery processes, such as nanofiltration and electrolysis with IL-based membrane, and co-extraction with IL-based bulky anion, were also summarized. Finally, the problems of ionic liquid-based extraction system were further analyzed. It was proposed that the in-depth study of lithium extraction mechanism, the development of new ionic liquid extractants and extraction systems, and the establishment of new extraction processes were the main development directions in the future. This review is expected to provide a reference for the green and efficient extraction of lithium from salt lake. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：3224 / 3238
页数：14
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