Direct and efficient in situ rubidium extraction from potassium chloride salts

IF 25.7 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Xulong Chen, Wenping Hu
{"title":"Direct and efficient in situ rubidium extraction from potassium chloride salts","authors":"Xulong Chen, Wenping Hu","doi":"10.1038/s41893-024-01449-w","DOIUrl":null,"url":null,"abstract":"Rubidium (Rb) is a valuable rare alkali metal that plays a crucial role in various high-tech applications, but extracting Rb from conventional sources poses sustainability challenges. A considerable amount of Rb is found in potassium chloride (KCl) salts, which can serve as a sustainable source depending on the extraction methods. Current liquid-phase methods are problematic due to the low Rb/K separation factor and high consumption of energy, water and chemicals. Extracting Rb directly from solid KCl salts is a promising approach, but achieving efficient recovery remains a challenge. Here we propose a crystal ripening microextraction strategy that enables in situ extraction of Rb from solid KCl salts with high selectivity, simplicity and high efficiency. By applying this strategy, we recovered 92.37% of Rb from KCl salts with an initial Rb content of 113 ppm. Compared with liquid-phase extraction, our approach results in a 97.57% reduction in energy consumption, a 22.24% increase in recovery efficiency and a 13.46-fold higher Rb/K separation factor, which substantially enhance environmental and economic benefits. In addition, this approach is suitable for recovering other target metals needed for various industrial applications directly from different solid metallic salts, providing a pathway to improve the sustainability of critical metal supply. Sustainably extracting rubidium (Rb), a valuable critical metal, from alternative sources remains challenging. Here the authors report a crystal ripening microextraction strategy that allows efficient Rb extraction from potassium chloride salts, with large environmental and economic benefits.","PeriodicalId":19056,"journal":{"name":"Nature Sustainability","volume":"7 12","pages":"1672-1680"},"PeriodicalIF":25.7000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Sustainability","FirstCategoryId":"93","ListUrlMain":"https://www.nature.com/articles/s41893-024-01449-w","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Rubidium (Rb) is a valuable rare alkali metal that plays a crucial role in various high-tech applications, but extracting Rb from conventional sources poses sustainability challenges. A considerable amount of Rb is found in potassium chloride (KCl) salts, which can serve as a sustainable source depending on the extraction methods. Current liquid-phase methods are problematic due to the low Rb/K separation factor and high consumption of energy, water and chemicals. Extracting Rb directly from solid KCl salts is a promising approach, but achieving efficient recovery remains a challenge. Here we propose a crystal ripening microextraction strategy that enables in situ extraction of Rb from solid KCl salts with high selectivity, simplicity and high efficiency. By applying this strategy, we recovered 92.37% of Rb from KCl salts with an initial Rb content of 113 ppm. Compared with liquid-phase extraction, our approach results in a 97.57% reduction in energy consumption, a 22.24% increase in recovery efficiency and a 13.46-fold higher Rb/K separation factor, which substantially enhance environmental and economic benefits. In addition, this approach is suitable for recovering other target metals needed for various industrial applications directly from different solid metallic salts, providing a pathway to improve the sustainability of critical metal supply. Sustainably extracting rubidium (Rb), a valuable critical metal, from alternative sources remains challenging. Here the authors report a crystal ripening microextraction strategy that allows efficient Rb extraction from potassium chloride salts, with large environmental and economic benefits.

Abstract Image

从氯化钾盐中直接高效地原位萃取铷
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
Nature Sustainability
Nature Sustainability Energy-Renewable Energy, Sustainability and the Environment
CiteScore
41.90
自引率
1.10%
发文量
159
期刊介绍: Nature Sustainability aims to facilitate cross-disciplinary dialogues and bring together research fields that contribute to understanding how we organize our lives in a finite world and the impacts of our actions. Nature Sustainability will not only publish fundamental research but also significant investigations into policies and solutions for ensuring human well-being now and in the future.Its ultimate goal is to address the greatest challenges of our time.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信