纳滤膜镁锂分离机理与选择渗透性研究进展

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Abstract This paper reviews recent studies on the separation of magnesium and lithium using nanofiltration membranes, with a primary focus on their physicochemical characteristics, ionic conductivity, and hydration features. It explains the main mechanisms of composite nanofiltration membranes in lithium extraction from salt lakes. Building upon the concept of interfacial polymerization, this review presents recent research on the separation of magnesium and lithium using composite nanofiltration membranes. These membranes are prepared through various methods such as aqueous monomer design, organic monomer design, surface grafting of the polyamide layer, reverse interfacial polymerization, the introduction of intermediate layers, and the modification of support layers. The characteristics of layer-by-layer self-assembly and coating cross-linking in optimizing nanofiltration membrane performance are elucidated. Finally, this paper provides a summary and future outlook for the separation of magnesium and lithium using nanofiltration membranes, from the perspectives of membrane modification methods, practical environmental applications, and industrial development. The aim is to offer theoretical support and practical guidelines for research fields such as lithium extraction through nanofiltration.

Key words： lithium recovery nanofiltration separation interfacial polymerization selective permeation modified membrane

Received: 05 January 2023

PACS:

X703.1

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	Articles by authors
	WANG Wu-bin
	WANG Jin
	DOU Meng-meng
	ZHANG Qing-yun
	WANG Xiao-yue
	HUO Kai-li
	HAN Chao

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WANG Wu-bin,WANG Jin,DOU Meng-meng等. Research progress on separation principle and selective permeability of magnesium and lithium by nanofiltration membrane[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 3983-3993.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I8/3983

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