中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 流固耦合系统力学重点实验室(2012-)
Electrokinetic transport mechanisms of rare earth elements in ion-adsorption deposits: An integrated model approach

文献类型：期刊论文

作者Xu, Jie3,4,5,6; Wang, Gaofeng3,4,5,6; Ling BW(凌博闻)1,2; Kang SZ(康石长)1,2,6; Yang, Yongqiang3,4,5,6; Liang, Xiaoliang3,4,5,6; Wei, Jingming3,4,5,6; Xu, Yongjin5,6; Zhu, Jianxi3,4,5,6; He, Hongping3,4,5,6
刊名ENVIRONMENTAL TECHNOLOGY & INNOVATION
出版日期2025-08-01
卷号39页码:15
关键词Rare earth elements Ion-adsorption rare earth deposits Electrokinetic mining Electrokinetic transport mechanism Numerical simulation
ISSN号2352-1864
DOI10.1016/j.eti.2025.104276
通讯作者Kang, Shichang(kangshichang@gig.ac.cn) ; Zhu, Jianxi(zhujx@gig.ac.cn)
英文摘要Heavy rare earth elements (REEs) are critical strategic resources for advanced technologies and the low-carbon economy transition. Ion-adsorption deposits (IADs) represent the primary sources of heavy REEs, yet their mining has caused severe environmental impacts. Electrokinetic mining (EKM), a sustainable alternative, promises efficient REE recovery from IADs. However, the electrokinetic transport mechanisms of REEs in IADs remain unclear, and predictive models are lacking. Here, we develop an integrated EKM (IEKM) model that rigorously incorporates coupled effects of diffusion, convection, electromigration, electroosmosis, and electrolysis to resolve REE transport in IADs. The IEKM model was validated using a 14-ton-scale IAD EKM, accurately simulating REE and leaching agent (NH4+) ion transport. The predicted REE recovery efficiency is 80.97 % after 11 days of EKM, aligning with experimental results (88.28 +/- 17.00 %). Significantly, the IEKM model quantitatively determines that diffusion, convection, electromigration, electroosmosis, and electrolysis contribute 3.06 %, 2.90 %, 82.91 %, 0.20 %, and 10.93 %, respectively, to REE transport. Unexpectedly, electromigration emerges as the dominant mechanism governing REE electrokinetic transport in IADs with significant influence by electrolysis, while electroosmosis exhibits negligible contribution, contradicting conventional expectations. Furthermore, electrolysis consumed 57.95 % of input energy due to water splitting, leaving only 42.05 % for direct REE transport. This work advances fundamental understanding of REE electrokinetic transport in IADs and establishes an industrially viable model, bridging experimental and numerical modeling to facilitate practical applications of environmentally sustainable EKM technology in resource recovery.
分类号一类
WOS关键词REMEDIATION ; RESOURCES
资助项目National Natural Science Foundation of China[92462303] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA0430205] ; National Science and Technology Major Project of China[2024ZD1004002] ; Science and Technology Projects in Guangzhou[2024A04J6520] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515012927] ; Science and Technology Planning of Guangdong Province, China[2023B1212060048]
WOS研究方向Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001499572100001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science and Technology Major Project of China ; Science and Technology Projects in Guangzhou ; Guangdong Basic and Applied Basic Research Foundation ; Science and Technology Planning of Guangdong Province, China
其他责任者康石长，Zhu, Jianxi
源URL[http://dspace.imech.ac.cn/handle/311007/101742]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.Guangdong Res Ctr Strateg Met & Green Utilizat, Guangzhou 510640, Peoples R China;
5.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China;
6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Deep Earth Proc & Resources, Guangzhou 510640, Peoples R China;
推荐引用方式
GB/T 7714		 Xu, Jie,Wang, Gaofeng,Ling BW,et al. Electrokinetic transport mechanisms of rare earth elements in ion-adsorption deposits: An integrated model approach[J]. ENVIRONMENTAL TECHNOLOGY & INNOVATION,2025,39:15.
APA Xu, Jie.,Wang, Gaofeng.,凌博闻.,康石长.,Yang, Yongqiang.,...&He, Hongping.(2025).Electrokinetic transport mechanisms of rare earth elements in ion-adsorption deposits: An integrated model approach.ENVIRONMENTAL TECHNOLOGY & INNOVATION,39,15.
MLA Xu, Jie,et al."Electrokinetic transport mechanisms of rare earth elements in ion-adsorption deposits: An integrated model approach".ENVIRONMENTAL TECHNOLOGY & INNOVATION 39(2025):15.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。