期刊
CURRENT OPINION IN ELECTROCHEMISTRY
卷 35, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.coelec.2022.101087
关键词
Sustainable mining; Desalination; Anion exchange membrane; Cation Exchange membrane; Electrodyalisis
资金
- RA -NET Cofund scheme under Horizon 2020 [Li + WATER project]
- ANPCyT, AR [PICT 2019-1939]
Research on developing direct lithium extraction technologies from aqueous sources is important due to the limitations of the currently used evaporitic technology. Electromembrane processes are a promising alternative as they are faster, more adaptable, and sustainable compared to traditional methods. Testing these methods with real brines is crucial for industrial-scale applications.
Research to develop direct lithium extraction technologies from aqueous sources is fundamental due to the environmental and techno-economic shortcomings of the evaporitic technology currently in use. Electromembrane processes are an attractive alternative since they could be much faster, more readily adaptable to brines of different compositions, sustainable since they use electrons as reactants, avoiding waste production, the use of chemicals, and decreasing the water footprint. Valuable Li+ ions are only a very minor component in a complex matrix of very high ionic strength with co-existing cations, most importantly Mg2+ and Na+, displaying similar chemical properties. A review from the recent literature shows that adaptation from the simple electrodialysis configuration will be needed to selectively recover pure lithium products. Testing of the proposed methodologies at meaningful concentrations, representative of real brines is key to bring these closer to industrial scale applications.
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