镁锂分离纳滤膜的研究进展 |
作者:赵国珂,潘国元,张 杨,于 浩,赵慕华,唐功庆,刘轶群 |
单位: 中石化(北京)化工研究院有限公司,北京 100013 |
关键词: 镁锂分离;纳滤膜;荷正电;膜分离;盐湖提锂 |
出版年,卷(期):页码: 2023,43(1):154-164 |
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。Mg2+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 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. |
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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