膜科学与技术

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Nanofiltration membranes for Mg2+/Li+ separation: A review

Authors： ZHAO Guoke, PAN Guoyuan, ZHANG Yang, YU Hao, ZHAO Muhua, TANG Gongqing, LIU Yiqun

Units： SINOPEC（Beijing）Research Institute of Chemical Industry Co., Ltd., Beijing, 100013, China

KeyWords： Mg2+/Li+ separation, nanofiltration, positively charged, membrane separation, lithium recovery from salt-lake brine

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year,volume(issue):pagination： 2023,43(1):154-164

Abstract：

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 Mg2+ 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 Mg2+/Li+ selectivity, low energy consumption and small footprint. The review summarizes the investigations on commercial NF membranes for Mg2+/Li+ separation and discusses the effects of operation parameters on the separation performance. The rational design and fabrication of positively charged NF membranes for Mg2+/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.

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第一作者简介：赵国珂（1995-），女，河南南阳人，工程师，博士，研究方向为分离膜材料，E-mail：zhaogk.bjhy@sinopec.com

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