Transport Model of Rare Earth Elements in Weathering Crusts during Electrokinetic Mining
文献类型：期刊论文
| 作者 | Wang, Gaofeng1,2,5; Ling, Bowen3,4; Liang, Xiaoliang1,2,5 ; Xu, Jie1,2,5; Kang, Shichang1,2,5; Wei, Jingming1,2,5; Tan, Wei1,2,5; Zhu, Runliang1,2,5; Zhu, Jianxi1,2,5; He, Hongping1,2,5
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| 刊名 | MINERALS
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| 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 |
| DOI | 10.3390/min14040360 |
| 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. |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001211252900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77059]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Zhu, Jianxi |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, 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, Bowen,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.,Ling, Bowen.,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. |
入库方式： OAI收割
来源：广州地球化学研究所
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