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Transport Model of Rare Earth Elements in Weathering Crusts during Electrokinetic Mining

文献类型：期刊论文

作者Wang, Gaofeng3,4,5; Ling BW(凌博闻)1,2; Liang, Xiaoliang3,4,5; Xu, Jie3,4,5; Kang, Shichang3,4,5; Wei, Jingming3,4,5; Tan, Wei3,4,5; Zhu, Runliang3,4,5; Zhu, Jianxi3,4,5; He, Hongping3,4,5
刊名MINERALS
出版日期2024-04-01
卷号14期号:4页码:15
关键词rare earth elements electrokinetic mining transport model weathering crust ionic size
DOI10.3390/min14040360
通讯作者Zhu, Jianxi(zhujx@gig.ac.cn)
英文摘要Electrokinetic mining (EKM) is a novel method for rare earth element (REE) mining that can achieve green and efficient recovery of REEs. However, as yet, there is no accurate model for describing the electrokinetic transport of REEs in weathering crusts, and this hinders the wider application of EKM. The conventional model fails to capture the microscale transport physics occurring in the nanochannels that exist ubiquitously in weathering crusts. Consequently, the existing models cannot distinguish the mobilities of different REEs. Here, we report a new model for a more faithful description of the electrokinetic transport of REEs in weathering crusts that considers the ionic size, which has previously been neglected. We reveal that the electrokinetic transport of heavy REEs (HREEs) is faster than that of light REEs (LREEs) in weathering crusts, which is contrary to the predictions of conventional models. Our model was validated experimentally by measurements of the electrokinetic transport of two LREEs (La and Sm) and an HREE (Er) in weathering crusts. The speed of electrokinetic transport follows the order Er > Sm > La. Our findings suggest that the ionic size is a non-negligible factor affecting the electrokinetic transport of REEs in weathering crusts containing nanochannels. This work offers a constitutive model to describe the electrokinetic transport of REEs in weathering crusts, which promotes both theoretical developments and practical applications of EKM.
分类号二类
WOS关键词LEACHING PROCESS ; GENESIS ; MINERALIZATION ; REMEDIATION ; DEPOSITS ; CHINA ; ROCKS ; ORE
资助项目National Natural Science Foundation of China ; GIGCAS
WOS研究方向Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:001211252900001
资助机构National Natural Science Foundation of China ; GIGCAS
其他责任者Zhu, Jianxi
源URL[http://dspace.imech.ac.cn/handle/311007/95085]  
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, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China;
5.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China;
推荐引用方式
GB/T 7714		 Wang, Gaofeng,Ling BW,Liang, Xiaoliang,et al. Transport Model of Rare Earth Elements in Weathering Crusts during Electrokinetic Mining[J]. MINERALS,2024,14(4):15.
APA Wang, Gaofeng.,凌博闻.,Liang, Xiaoliang.,Xu, Jie.,Kang, Shichang.,...&He, Hongping.(2024).Transport Model of Rare Earth Elements in Weathering Crusts during Electrokinetic Mining.MINERALS,14(4),15.
MLA Wang, Gaofeng,et al."Transport Model of Rare Earth Elements in Weathering Crusts during Electrokinetic Mining".MINERALS 14.4(2024):15.

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来源：力学研究所

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