Lithium recovery from Qarham brine using adsorption-membrane separation hybrid system

MENG Qingwei; ZHANG Feng; CHEN Lu; XIA Yongsheng; JU Shengui; XING Weihong

doi:10.11949/j.issn.0438-1157.20161727

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Lithium recovery from Qarham brine using adsorption-membrane separation hybrid system

更新时间：2025-12-10

- Lithium recovery from Qarham brine using adsorption-membrane separation hybrid system
- CIESC Journal Issue 5, Pages: 1899-1905(2017)
- 作者机构：
  
  南京工业大学化工学院, 国家特种分离膜工程技术研究中心,江苏,南京,210009
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161727
  CLC： Q028.5TQ131.1
- Online First：05 May 2017，
  
  Published：05 May 2017
- 稿件说明：
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MENG Qingwei, ZHANG Feng, CHEN Lu, et al. Lithium recovery from Qarham brine using adsorption-membrane separation hybrid system[J]. CIESC Journal, 2017, (5): 1899-1905.
DOI：

MENG Qingwei, ZHANG Feng, CHEN Lu, et al. Lithium recovery from Qarham brine using adsorption-membrane separation hybrid system[J]. CIESC Journal, 2017, (5): 1899-1905. DOI： 10.11949/j.issn.0438-1157.20161727.

摘要

将锰系离子筛吸附与陶瓷膜耦合，用于高镁锂比盐湖卤水的提锂研究。采用水热法制备了高效锂离子筛H1.6Mn1.6O4，考察离子筛用于卤水提锂效果和陶瓷膜的分离性能。结果表明：制备的离子筛粉体粒径分布在100～500 nm之间，平均粒径为160 nm，用于察尔汗盐湖卤水中对Li+吸附容量达到31.44 mg·g-1；孔径50 nm的陶瓷膜对离子筛的截留率达到100%，膜渗透通量大于150 L·m-2·h-1；反冲操作可有效维持吸附-膜分离过程的稳定性，吸附与陶瓷膜的耦合过程对盐湖卤水中的锂提取率超过97%，盐酸和双氧水清洗可有效恢复膜渗透通量。研究结果为高镁锂比盐湖卤水提锂提供了新方法。

Abstract

Lithium uptake from brine has attracted great interest in recent years. An adsorption and membrane separation coupling system used for recovery lithium from brine with high ratio of magnesium to lithium. Lithium ion sieve H1.6Mn1.6O4(HMO) was obtained from o-LiMnO2 which was prepared by one-step hydrothermal synthesis and its adsorption property in Qarham brine was studied. The results showed that the particle size of HMO was between 100 to 500 nm and its adsorption capacity of Li+ in brine reached 31.44 mg·g-1. Ceramic membrane with pore size of 50 nm showed the highest permeation flux (150 L·m-2·h-1) and 100% rejection of lithium ion sieves. During the adsorption-membrane continue process

the extraction rate of lithium was more than 97%

and backflushing could effectively enhance the membrane filtration process. The fouled ceramic membrane was recovered with HCl and H2O2 solution. The results implied that the adsorption-membrane separation hybrid system could be used for lithium extraction from brine with high Mg/Li ratio

and had a good application prospect.

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