Study on lithium resource separation from underground brine with high concentration of sodium by aluminum-based lithium adsorbent

被引：0

作者：

Sheng B. ^{[1
,2
]}

Yu J. ^{[1
,2
]}

Lin S. ^{[1
,2
]}

机构：

[1] National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai

[2] Joint International Laboratory for Potassium and Lithium Strategic Resources, East China University of Science and Technology, Shanghai

来源：

Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 08期

关键词：

aluminum-based lithium adsorbent; fixed bed; lithium adsorption; stage-by-stage cyclic desorption; underground brine;

D O I：

10.11949/0438-1157.20230375

中图分类号：

学科分类号：

摘要：

Aluminum-based lithium adsorbent is the only adsorbent which has achieved industrial application of lithium recovery from salt lakes due to its moderate desorption conditions without dissolution loss. However, its application feasibility in high-sodium underground brine remains to be investigated. The effects of the flow rate of brine, desorption temperature and the initial concentration of ions in eluent on adsorption and desorption processes in the fixed bed were systematically investigated with granular H-LDHs adsorbents homemade in the laboratory. The results showed that the breakthrough time decreased by 79% while the breakthrough adsorption capacity only decreased by 17.8% when the flow rate rose from 1 BV/h (1 BV/h = 0.170 L/h) to 4 BV/h in high Na+ brine. Increasing desorption temperature could significantly enhance the Li+ desorption amount, however, the Li+ desorption amount was suppressed with the increasing concentration of Na+ in eluent. In addition, a stage-by-stage cyclic desorption technology was designed and applied on the real underground brine somewhere in Sichuan, which could effectively achieve the enrichment of Li+ in the eluent during the desorption process. © 2023 Materials China. All rights reserved.

引用

页码：3375 / 3385

页数：10