Electrokinetic in situ leaching of U from low-permeability uranium ore
In this study, the impacts of electrokinetic in situ leaching of uranium (EK-ISLU) on the pore structure and connectivity of the low-permeability uranium ore and its leaching efficiency were investigated. Our results demonstrated that a direct current field with an intensity of 7.5 V/cm increased th...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-02-01
|
| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573324004613 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832576488168226816 |
|---|---|
| author | Chunguang Li Wenji Wang Zhenzhong Liu Yongmei Li Qi Liu Longcheng Liu |
| author_facet | Chunguang Li Wenji Wang Zhenzhong Liu Yongmei Li Qi Liu Longcheng Liu |
| author_sort | Chunguang Li |
| collection | DOAJ |
| description | In this study, the impacts of electrokinetic in situ leaching of uranium (EK-ISLU) on the pore structure and connectivity of the low-permeability uranium ore and its leaching efficiency were investigated. Our results demonstrated that a direct current field with an intensity of 7.5 V/cm increased the porosity by 7.07 % and enhanced the uranium leaching efficiency by 73.73 % using a sulfuric acid solution. Under electrical stimulation, the leaching agent exhibited uniform penetration ability through combined electromigration and electroosmosis effects, significantly improving the directed migration of the target ions. Various characterization techniques, such as Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDS), three-dimensional computed tomography (CT) pore scanning and Brunauer-Emmett-Teller (BET), showed that the electrokinetic-induced action overcame the preferential flow phenomena, promoted the dissolution of the target minerals and gangue rocks, and notably improved the pore structure to ultimately enhance the uranium leaching efficiency. Our results provide valuable insights for the development of innovative technologies aimed at efficiently recovering U from low-permeability uranium ores. |
| format | Article |
| id | doaj-art-862d2ee1762a4f98b0f422a8a5962c31 |
| institution | Kabale University |
| issn | 1738-5733 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj-art-862d2ee1762a4f98b0f422a8a5962c312025-01-31T05:11:08ZengElsevierNuclear Engineering and Technology1738-57332025-02-01572103212Electrokinetic in situ leaching of U from low-permeability uranium oreChunguang Li0Wenji Wang1Zhenzhong Liu2Yongmei Li3Qi Liu4Longcheng Liu5R&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China; School of Resource Environment and Safety Engineering, University of South China, Hengyang, 421001, PR China; China Institute of Atomic Energy, Beijing, 102413, PR China; Corresponding author. R&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China.R&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China; School of Nuclear Science and Technology, University of South China, Hengyang, 421001, PR ChinaR&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China; School of Resource Environment and Safety Engineering, University of South China, Hengyang, 421001, PR ChinaR&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China; School of Resource Environment and Safety Engineering, University of South China, Hengyang, 421001, PR ChinaR&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China; School of Resource Environment and Safety Engineering, University of South China, Hengyang, 421001, PR ChinaR&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China; School of Nuclear Science and Technology, University of South China, Hengyang, 421001, PR China; Beijing Research Institute of Chemical Engineering and Metallurgy, Beijing, 101149, PR China; Corresponding author. R&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang, 421001, PR China.In this study, the impacts of electrokinetic in situ leaching of uranium (EK-ISLU) on the pore structure and connectivity of the low-permeability uranium ore and its leaching efficiency were investigated. Our results demonstrated that a direct current field with an intensity of 7.5 V/cm increased the porosity by 7.07 % and enhanced the uranium leaching efficiency by 73.73 % using a sulfuric acid solution. Under electrical stimulation, the leaching agent exhibited uniform penetration ability through combined electromigration and electroosmosis effects, significantly improving the directed migration of the target ions. Various characterization techniques, such as Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDS), three-dimensional computed tomography (CT) pore scanning and Brunauer-Emmett-Teller (BET), showed that the electrokinetic-induced action overcame the preferential flow phenomena, promoted the dissolution of the target minerals and gangue rocks, and notably improved the pore structure to ultimately enhance the uranium leaching efficiency. Our results provide valuable insights for the development of innovative technologies aimed at efficiently recovering U from low-permeability uranium ores.http://www.sciencedirect.com/science/article/pii/S1738573324004613Low-permeability uranium oreEK-ISLUIncreased permeabilityEnhanced leaching |
| spellingShingle | Chunguang Li Wenji Wang Zhenzhong Liu Yongmei Li Qi Liu Longcheng Liu Electrokinetic in situ leaching of U from low-permeability uranium ore Nuclear Engineering and Technology Low-permeability uranium ore EK-ISLU Increased permeability Enhanced leaching |
| title | Electrokinetic in situ leaching of U from low-permeability uranium ore |
| title_full | Electrokinetic in situ leaching of U from low-permeability uranium ore |
| title_fullStr | Electrokinetic in situ leaching of U from low-permeability uranium ore |
| title_full_unstemmed | Electrokinetic in situ leaching of U from low-permeability uranium ore |
| title_short | Electrokinetic in situ leaching of U from low-permeability uranium ore |
| title_sort | electrokinetic in situ leaching of u from low permeability uranium ore |
| topic | Low-permeability uranium ore EK-ISLU Increased permeability Enhanced leaching |
| url | http://www.sciencedirect.com/science/article/pii/S1738573324004613 |
| work_keys_str_mv | AT chunguangli electrokineticinsituleachingofufromlowpermeabilityuraniumore AT wenjiwang electrokineticinsituleachingofufromlowpermeabilityuraniumore AT zhenzhongliu electrokineticinsituleachingofufromlowpermeabilityuraniumore AT yongmeili electrokineticinsituleachingofufromlowpermeabilityuraniumore AT qiliu electrokineticinsituleachingofufromlowpermeabilityuraniumore AT longchengliu electrokineticinsituleachingofufromlowpermeabilityuraniumore |