Ion-fractionation of lithium ions from magnesium ions by electrodialysis using monovalent selective ion-exchange membranes

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• 作者：Xiao-Yao Nie ; Shu-Ying Sun ; ^{shysun@ecust.edu.cn} ; Ze Sun ; Xingfu Song ; Jian-Guo Yu ; ^{jgyu@ecust.edu.cn}
• 关键词：Electrodialysis ; Ion-fractionation ; Brine ; Lithium ; High Mg/Li ratio
• 刊名：Desalination
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：403
• 期：Complete
• 页码：128-135
• 全文大小：972 K
• 卷排序：403

文摘

Electrodialysis (ED) was used to treat a saline water with a high Mg/Li ratio. The main objective of this study was to significantly reduce the Mg/Li ratio. The Mg/Li ratio can be decreased as high as 21.8 times via ED, and the Li+ recovery can reach over 90%. ED was proven to be technically and economically feasible to separate lithium from salt lake brine with high Mg/Li ratio. The selective separation mechanism of ED was qualitatively discussed.