摘要
随着锂电池行业的快速发展和广泛应用,全球锂资源消耗量逐年增大,节能高效的提锂技术日益受到关注.Mg^(2+)和Li^(+)的分离是盐湖卤水提锂工艺中最具难度的环节,纳滤膜可有效降低盐湖卤水中的镁锂比,在盐湖卤水提锂领域具有良好的应用前景.本文总结了近年来商品纳滤膜用于镁锂分离的研究进展,梳理了操作参数对膜性能的影响,深入讨论针对镁锂分离的荷正电纳滤膜的设计与制备,在此基础上,提出该领域的核心问题和发展方向,旨在为推动膜法盐湖提锂的实际应用提供参考.
The global consumption of lithium resources has increased significantly with the rapid development and extensive application of lithium-ion batteries. Great efforts have been devoted to develop efficient and sustainable lithium recovery technologies. The separation of Mg^(2+) and Li^(+) is the most challenging step in the whole lithium recovery process. Nanofiltration(NF) has promising application prospects in the field of salt-lake brine lithium extraction owing to the good Mg^(2+)/Li^(+) selectivity, low energy consumption and small footprint. The review summarizes the investigations on commercial NF membranes for Mg^(2+)/Li^(+) separation and discusses the effects of operation parameters on the separation performance. The rational design and fabrication of positively charged NF membranes for Mg^(2+)/Li^(+) separation is discussed. The critical challenges are analyzed and the potential research directions are proposed, aiming at promoting the practical applications of NF technologies for lithium recovery from salt-lake brine.
作者
赵国珂
潘国元
张杨
于浩
赵慕华
唐功庆
刘轶群
ZHAO Guoke;PAN Guoyuan;ZHANG Yang;YU Hao;ZHAO Muhua;TANG Gongqing;LIU Yiqun(SINOPEC(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013,China)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2023年第1期154-164,共11页
Membrane Science and Technology
基金
中国石油化工股份有限公司科研项目。
关键词
镁锂分离
纳滤膜
荷正电
膜分离
盐湖提锂
Mg^(2+)/Li^(+) separation
nanofiltration
positively charged
membrane separation
lithium recovery from salt-lake brine
