Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study

doi:10.3390/min14050491

IMECH-IR > 流固耦合系统力学重点实验室

	Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study
	Kang, Shichang 1,2,3; Ling BW(凌博闻)4,5; Liang, Xiaoliang 1,2,3; Wang, Gaofeng 1,2,3; Xu, Jie 1,2,3; Xu, Yongjin 1,2,3; Zhu, Runliang 1,2,3; Wei, Jingming 1,2,3; Zhu, Jianxi 1,2,3; He, Hongping 1,2,3
通讯作者	Wang, Gaofeng([email protected])
发表期刊	MINERALS
	2024-05-01
卷号	14 期号:5 页码:16
摘要	Rare earth elements (REEs) are essential raw materials for modern industries but mining them has caused severe environmental issues, particularly the recovery of heavy REEs (HREEs) from ion-adsorption deposits (IADs). Very recently, an emerging technology, electrokinetic mining (EKM), has been proposed for the green and efficient recovery of REEs from IADs. However, the conduction mechanism of the weathering crust soil, which is also a prerequisite for EKM, remains unclear, making the EKM process unpredictable. Here, we systematically investigated the conductivity of weathering crust soil in the presence of light REEs (LREEs, i.e., La3+ and Sm3+) and HREEs (Er3+ and Y3+), respectively. Results suggested that the voltage was dynamically and spatially redistributed by the movement of REEs and water during EKM, and the conventional assumption of the linear distribution of voltage leads to an inaccurate description of soil voltage. We proposed an improved Archie's equation by coupling the mechanisms of liquid phase and solid-liquid interface conduction, which can predict soil conductivity more precisely. Moreover, the extended Archie's equation is able to recalculate the voltage distribution at distinct times and spaces well during EKM. More importantly, the water content in field-scale weathered-crust soils can be retrieved by the newly proposed Archie's equation, which helps optimize the leaching wells and improve the recovery rate of REE. This study focuses on the conduction mechanism of weathering crust soil, which provides a theoretical basis for better use of the EKM technology and promotes mining efficiency fundamentally.
关键词	electrokinetic mining rare earth elements recovery soil conductivity Archie's equation
DOI	10.3390/min14050491
收录类别	SCI
语种	英语
WOS记录号	WOS:001233275200001
关键词[WOS]	ELECTRICAL-CONDUCTIVITY ; CLAY ; WATER ; CRUST
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS类目	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
资助项目	National Natural Science Foundation of China ; GIGCAS
项目资助者	National Natural Science Foundation of China ; GIGCAS
论文分区	二类
力学所作者排名	2
RpAuthor	Wang, Gaofeng
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/95496
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China; 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Kang, Shichang,Ling BW,Liang, Xiaoliang,et al. Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study[J]. MINERALS,2024,14,5,:16.Rp_Au:Wang, Gaofeng
APA	Kang, Shichang.,凌博闻.,Liang, Xiaoliang.,Wang, Gaofeng.,Xu, Jie.,...&He, Hongping.(2024).Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study.MINERALS,14(5),16.
MLA	Kang, Shichang,et al."Recovery of Rare Earth Elements from Ion-Adsorption Deposits Using Electrokinetic Technology: The Soil Conductivity Mechanism Study".MINERALS 14.5(2024):16.