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Ye Zhang,Li Wang,Wei Sun,Yue-hua Hu,Honghu Tang 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.81 No.-
Recent years have seen rapid improvement of technology and large-scale applications of lithium-ionbatteries, which leads to an increasing market demand for lithium. Since the land lithium resources arediminishing drastically, the sources of lithium extraction have shifted to the large amount of waterresources containing salt-lake brines and seawater. Among the varieties of aqueous recovery approaches,membrane technology seems to have huge development potential and good application prospect. This isbecause the membrane technologies exhibit excellent Li/Mg separation selectivity, with low energyconsumption and green process owing to no addition of chemicals. The present work reviews the latestadvances in various membrane technologies, including nanofiltration membrane, electrodialysis,membrane capacitive deionization approaches, solid electrolyte electrolysis-based technology, etc. Therecent developments in positively charged nanofiltration membrane are discussed in terms of thepreparation methods, membrane properties, and Li/Mg separation coefficient. In addition, the effects ofseveral factors on electrodialysis for lithium extraction and relevant mechanisms in both simple andactual saline systems are discussed, including applied voltage, VC/VD, and coexisting ions. Theapplications of electrodialysis with novel selective membrane involving nanofiltration membrane as wellas solid electrolyte membrane and perspectives for further investigation are proposed.
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