An integrated membrane process for preparation of lithium hydroxide from high Mg/Li ratio salt lake brine
An integrated membrane process for preparation of lithium hydroxide from high Mg/Li ratio salt lake brine
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高镁锂比盐湖卤水制备氢氧化锂的集成膜工艺
DOI：
10.1016/j.desal.2020.114620
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发表时间：
2020-11
期刊：
影响因子：
9.9
通讯作者：
Xiang Xu
中科院分区：
文献类型：
--
作者：
Zhao Youjing;Wang Huaiyou;Li Yan;Wang Min;Xiang Xu
Preparation of lithium hydroxide from high Mg/Li ratio salt lake brine is facing several challenges: separate lithium and magnesium, enrich the lithium, and produce lithium hydroxide with high purity. In this study, an integrated membrane process, combining BMED with NF, RO, and CED processes, was used to prepare LiOH from salt lake brine with the Mg/Li ratio higher than 30.0. The effects of operating pressure, pH of feed solution, and dilution multiple of feed solution on the separation and recovery efficiency of lithium were investigated. A dual-stage NF process and a RO-CED process were proved to be the effective way to remove magnesium and enrich lithium respectively, as the Mg/Li ratio can be controlled lower than 0.5 and the lithium concentration was concentrated above 14 g/L. In BMED process, the initial concentration of feed solution and current density were optimized, and the relationships between the concentration of acid/base and current efficiency were found. The results indicated that the lithium concentration of alkali solution prepared through this process was over 1.0 M, and the current efficiency and energy consumption were 36.05% and 6.20 kWh/kg, which outperformed previous works. The process was effective for preparation of LiOH from salt lake brine.
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DOI：
--
发表时间：
2006
期刊：
Membrane Science and Technology
影响因子：
--
作者：
Y. Lixin
通讯作者：
Y. Lixin
使用双极膜选择渗析回收 RO 装置中的浓盐水
影响因子：
9.9
作者：
Chen, Binglun;Jiang, Chenxiao;Xu, Tongwen
通讯作者：
Xu, Tongwen
影响因子：
9.9
作者：
Krieg, HM;Modise, SJ;Neomagus, HWJP
通讯作者：
Neomagus, HWJP
影响因子：
9.9
作者：
D. Oatley;L. Llenas;N. Aljohani;P. M. Williams;X. Martínez‐Lladó;M. Rovira;J. Pablo
通讯作者：
D. Oatley;L. Llenas;N. Aljohani;P. M. Williams;X. Martínez‐Lladó;M. Rovira;J. Pablo
影响因子：
3.8
作者：
Gang Yang;Hongle Shi;Wenqiang Liu;W. Xing;N. Xu
通讯作者：
Gang Yang;Hongle Shi;Wenqiang Liu;W. Xing;N. Xu