Highly selective deep eutectic solvents for the recovery of lithium from high sodium concentration aqueous solutions

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL AIChE Journal Pub Date : 2025-01-07 DOI:10.1002/aic.18679

Ke Xue, Hai Liu, Peng Kou, Yan Zhou, Yan Zhang, Zhaoyou Zhu, Jianguang Qi, Yinglong Wang

{"title":"Highly selective deep eutectic solvents for the recovery of lithium from high sodium concentration aqueous solutions","authors":"Ke Xue, Hai Liu, Peng Kou, Yan Zhou, Yan Zhang, Zhaoyou Zhu, Jianguang Qi, Yinglong Wang","doi":"10.1002/aic.18679","DOIUrl":null,"url":null,"abstract":"Efficient and selective extraction of lithium from sodium-rich systems is crucial for meeting the growing demand for lithium and achieving green development goals. In this study, we synthesized three hydrophobic deep eutectic solvents (HDES) using trioctylphosphine oxide and β-diketones for the separation of alkali metal ions. Experimental results indicated that the chosen extractants exhibit excellent Li+ extraction capability under alkaline conditions, and the extraction capacity of HDES for Li+ is superior to that of their components. Thermodynamic function calculations revealed that the Li+ extraction reaction is exothermic. A study of the factors affecting Li+ extraction efficiency and separation coefficients, and the recyclability of HDES, was conducted, achieving efficient recovery of lithium from solutions. Additionally, Fourier-transform infrared spectroscopy analysis and quantum chemical calculations elucidated the extraction mechanism. This study aims to provide a theoretical basis and a green approach for the selective recovery of Li+ from high Na/Li aqueous solutions.","PeriodicalId":120,"journal":{"name":"AIChE Journal","volume":"28 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"AIChE Journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1002/aic.18679","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Efficient and selective extraction of lithium from sodium-rich systems is crucial for meeting the growing demand for lithium and achieving green development goals. In this study, we synthesized three hydrophobic deep eutectic solvents (HDES) using trioctylphosphine oxide and β-diketones for the separation of alkali metal ions. Experimental results indicated that the chosen extractants exhibit excellent Li⁺ extraction capability under alkaline conditions, and the extraction capacity of HDES for Li⁺ is superior to that of their components. Thermodynamic function calculations revealed that the Li⁺ extraction reaction is exothermic. A study of the factors affecting Li⁺ extraction efficiency and separation coefficients, and the recyclability of HDES, was conducted, achieving efficient recovery of lithium from solutions. Additionally, Fourier-transform infrared spectroscopy analysis and quantum chemical calculations elucidated the extraction mechanism. This study aims to provide a theoretical basis and a green approach for the selective recovery of Li⁺ from high Na/Li aqueous solutions.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.