Examining the potential of type V DESs for the solvent extraction of metal ions†

IF 9.3 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Green Chemistry Pub Date : 2025-03-25 DOI:10.1039/D5GC00489F

Nicolas Schaeffer, Inês C. M. Vaz, Maísa Saldanha Pinheiro, Felipe Olea, Takafumi Hanada, Sandrine Dourdain and João A. P. Coutinho

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Abstract

Growing interest in sustainable and efficient metal ion separation has led to the exploration of non-ionic deep eutectic solvents (DESs), also known as type V DESs, as promising alternatives to conventional organic phases in solvent extraction (SX). This work summarizes recent developments, focusing solely on the use of non-ionic DESs and excluding ionic DESs, for the separation of metal ions from synthetic and real leachates. The review does not aim to exhaustively cover all studies but focuses on the molecular mechanisms of SX, how inherent properties of DESs influence these mechanisms, and how they can be harnessed to improve the separation selectivity. It further highlights the physico-chemical properties of DESs in SX and compares them with traditional systems, emphasizing similarities and new opportunities. The overall aim is to clarify the potential and limitations of type V DESs in SX, including their often touted credentials as “green solvents”, and to offer guidelines for their practical use and addressing skepticism towards novel solvents in hydrometallurgy.

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考察 V 型 DES 在溶剂萃取金属离子方面的潜力†。

对可持续和高效金属离子分离的兴趣日益浓厚，导致了对非离子深度共晶溶剂（DESs）的探索，也称为V型DESs，作为溶剂萃取（SX）中传统有机相的有前途的替代品。这项工作总结了最近的发展，只关注使用非离子DESs和不包括离子DESs，从合成和真正的渗滤液中分离金属离子。这篇综述的目的不是详尽地涵盖所有的研究，而是侧重于SX的分子机制，DESs的固有性质如何影响这些机制，以及如何利用它们来提高分离选择性。进一步强调了SX中DESs的物理化学性质，并与传统体系进行了比较，强调了相似性和新的机会。总体目标是澄清SX中V型DESs的潜力和局限性，包括它们经常被吹捧为“绿色溶剂”的证书，并为其实际使用提供指导方针，并解决对湿法冶金中新型溶剂的怀疑。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Green Chemistry 化学-化学综合

CiteScore

16.10

自引率

7.10%

发文量

677

审稿时长

1.4 months

期刊介绍： Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.