干旱区生态环境知识资源中心(Arid): Integrating Divalent-Selective Electrodialysis in Brackish Water Desalination

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DOI	10.1021/acs.estlett.3c00861
	Integrating Divalent-Selective Electrodialysis in Brackish Water Desalination
	Monat, Lior; Liu, Ru; Elimelech, Menachem; Nir, Oded
通讯作者	Nir, O
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
ISSN	2328-8930
出版年	2024
卷号	11 期号:2 页码:172-178
英文摘要	Brackish water desalination is imperative for meeting water demands in arid regions far from the seashore. Reverse osmosis, the leading desalination technology, removes nearly all calcium and magnesium ions, which are essential in drinking and irrigation water. Multistep process schemes combining reverse osmosis with ion-selective membrane processes can maintain or reintroduce these minerals without external chemical addition. Previous efforts emphasized membrane processes that retain multivalent ions, focusing primarily on nanofiltration and monovalent-selective electrodialysis. The potential of processes where monovalent ions are retained and divalent preferentially transported through the membrane has not been studied systematically. Here, we explored applying divalent-selective electrodialysis to transfer calcium and magnesium from the influent into the brackish water reverse osmosis permeate. This novel concept enables chemical-free remineralization of the reverse osmosis permeate while reducing membrane scaling by sparingly soluble calcium salts. We tested this concept experimentally using commercial membranes and natural brackish water, evaluated the product water based on quality criteria for domestic and agricultural use, and assessed the techno-economic feasibility. We found that water suitable for potable use and irrigation can be attained at a reasonable cost, depending on current density. These findings highlight the need for more research on divalent-selective electrodialysis and offer future directions.
英文关键词	Ion-ion selectivity selective ion-exchange membranes mineral recovery reverse osmosis pretreatment reverse osmosis post-treatment circular desalination water softening
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001162190400001
WOS关键词	CATION-EXCHANGE MEMBRANES ; REVERSE-OSMOSIS ; CONCENTRATE ; PERMSELECTIVITY ; CHALLENGES ; DISCHARGE ; RECOVERY ; RESIN ; IONS
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403650
推荐引用方式 GB/T 7714	Monat, Lior,Liu, Ru,Elimelech, Menachem,et al. Integrating Divalent-Selective Electrodialysis in Brackish Water Desalination[J],2024,11(2):172-178.
APA	Monat, Lior,Liu, Ru,Elimelech, Menachem,&Nir, Oded.(2024).Integrating Divalent-Selective Electrodialysis in Brackish Water Desalination.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,11(2),172-178.
MLA	Monat, Lior,et al."Integrating Divalent-Selective Electrodialysis in Brackish Water Desalination".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 11.2(2024):172-178.