Extraction of rubidium ion from brine solutions by dicyclohexano-18-crown-6 / ionic liquid system

IF 0.7 4区工程技术 Q4 CHEMISTRY, APPLIED

Polish Journal of Chemical Technology Pub Date : 2023-03-01 DOI:10.2478/pjct-2023-0009

Dongfang Huang, Guixiang Ma, Peng Lv, Quanbao Zhou

{"title":"Extraction of rubidium ion from brine solutions by dicyclohexano-18-crown-6 / ionic liquid system","authors":"Dongfang Huang, Guixiang Ma, Peng Lv, Quanbao Zhou","doi":"10.2478/pjct-2023-0009","DOIUrl":null,"url":null,"abstract":"Abstract Separation among rubidium and potassium ions from salt lake brines remains challenging. In this work, a typical room temperature ionic liquid 1-ethyl-3-metyhlimidazaolium bis(trifluoromethylsulfonyl)imide ([C2mim+][NTf2–]) was used as diluent and synergistic extractant, dicyclohexano-18-crown-6 (DCH18C6) was used as extractant to extract rubidium ions from brine solutions which contain high concentrations of potassium ions was investigated. Under the optimal conditions, the single extraction efficiency of rubidium ions was up 93.63%. The thermodynamic parameters of the rubidium ion extraction were obtained. Based on the slope analysis method, the extracted species in the organic phase were ascertained as 1:1 complex. UV-visible has been performed to investigate the ion concentration of ionic liquid before and after the interaction of metal ions and ligands. Rubidium ions in [Rb · DCH18C6]+ complex were stripped by 2.5 mol · L–1 NH4NO3. The extraction system offers high efficiency, simplicity and environmentally friendly application prospect to separate rubidium from brine solutions.","PeriodicalId":20324,"journal":{"name":"Polish Journal of Chemical Technology","volume":"25 1","pages":"61 - 68"},"PeriodicalIF":0.7000,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polish Journal of Chemical Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.2478/pjct-2023-0009","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract Separation among rubidium and potassium ions from salt lake brines remains challenging. In this work, a typical room temperature ionic liquid 1-ethyl-3-metyhlimidazaolium bis(trifluoromethylsulfonyl)imide ([C2mim+][NTf2–]) was used as diluent and synergistic extractant, dicyclohexano-18-crown-6 (DCH18C6) was used as extractant to extract rubidium ions from brine solutions which contain high concentrations of potassium ions was investigated. Under the optimal conditions, the single extraction efficiency of rubidium ions was up 93.63%. The thermodynamic parameters of the rubidium ion extraction were obtained. Based on the slope analysis method, the extracted species in the organic phase were ascertained as 1:1 complex. UV-visible has been performed to investigate the ion concentration of ionic liquid before and after the interaction of metal ions and ligands. Rubidium ions in [Rb · DCH18C6]+ complex were stripped by 2.5 mol · L–1 NH4NO3. The extraction system offers high efficiency, simplicity and environmentally friendly application prospect to separate rubidium from brine solutions.

查看原文本刊更多论文

双环己烷-18-冠-6 /离子液体体系萃取卤水中的铷离子

摘要从盐湖卤水中分离铷离子和钾离子仍然具有挑战性。本文以一种典型的室温离子液体1-乙基-3-甲基咪唑鎓双（三氟甲基磺酰基）酰亚胺（[C2mim+][NTf2–]）为稀释剂和协同萃取剂，以二环己基18-冠-6（DCH18C6）为萃取剂，从高浓度钾离子的盐水溶液中萃取铷离子。在最佳条件下，铷离子的单次萃取效率提高了93.63%。得到了铷离子萃取的热力学参数。基于斜率分析方法，确定有机相中提取的物种为1:1的络合物。用紫外-可见光谱法研究了金属离子与配体相互作用前后离子液体的离子浓度。用2.5 mol·L–1 NH4NO3剥离[Rb·DCH18C6]+配合物中的铷离子。该萃取系统具有分离铷的高效、简便、环保的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Polish Journal of Chemical Technology CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL

CiteScore

1.70

自引率

10.00%

发文量

审稿时长

4.5 months

期刊介绍： Polish Journal of Chemical Technology is a peer-reviewed, international journal devoted to fundamental and applied chemistry, as well as chemical engineering and biotechnology research. It has a very broad scope but favors interdisciplinary research that bring chemical technology together with other disciplines. All authors receive very fast and comprehensive peer-review. Additionally, every published article is promoted to researchers working in the same field.