Uranium release surrounding a single fracture in a uranium-rich reservoir under geologic carbon storage conditions
文献类型：期刊论文
| 作者 | Zhang, Liwei1,2; Miao, Xiuxiu1,2; Wang, Bin1,2; Liu, Hejuan1,2; Wang, Yan1; Gan, Manguang1,2; Li, Xiaochun1,2
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| 刊名 | COMPUTATIONAL GEOSCIENCES
 |
| 出版日期 | 2020-05-27 |
| 页码 | 11 |
| 关键词 | Uranium Fracture CO(2)storage Porosity Water contamination |
| ISSN号 | 1420-0597 |
| DOI | 10.1007/s10596-020-09974-1 |
| 英文摘要 | Though geologic carbon storage (GCS) is widely recognized as a promising strategy to reduce emissions of greenhouse gas (GHG), the potential for mobilization of radioactive uranium (U) from U-bearing minerals in deep subsurface due to CO(2)injection remains a concern. In this study, supercritical CO(2)and brine flowing through a fracture surrounded by reservoir rock containing uranium is simulated so as to study the potential of uranium release as a result of CO(2)injection and the impact of various factors on total uranium release rate. Mineral compositions of the reservoir rock are from previously published literature, which mimics typical sandstone mineral compositions. The reservoir rock is assumed to have 2 x 10(-4) vol% UO(2)in solid phase. Simulation results show that CO(2)injection induces UO(2)dissolution, and both CO(2)and mobilized uranium are able to migrate in both the fracture and the rock matrix surrounding the fracture. However, the released uranium concentration is quite low in a 60-day simulation period. Mineral dissolution causes a very small porosity increase surrounding the fracture in the simulation period. Sensitivity analysis shows that an increase of UO(2)specific surface area and UO(2)content in reservoir rock causes a significant increase in released uranium concentration. In other words, total uranium release rate is positively correlated with the specific surface area of UO(2)and UO(2)content in reservoir rock because the increase of specific surface area and UO(2)content increases the total area of UO(2)in contact with HCO(3)(-)and O-2, which raises total uranium release rate. In summary, uranium release in and surrounding the fracture is mainly controlled by uranium supply of the reservoir rock, and the risk of environmental contamination by CO2-induced uranium release is quite low in the scenario reported. |
| 资助项目 | Thousand Talent Program for Outstanding Young Scientists[Y731101B01] ; National Natural Science Foundation of China[41807275] ; National Natural Science Foundation of China[41902258] ; National Natural Science Foundation of China[U1967208] ; China Postdoctoral Science Foundation[2018M632948] ; CAS-ITRI[CAS-ITRI2019011] |
| WOS研究方向 | Computer Science ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000558754400001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24654]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Bin |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Beijing 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Liwei,Miao, Xiuxiu,Wang, Bin,et al. Uranium release surrounding a single fracture in a uranium-rich reservoir under geologic carbon storage conditions[J]. COMPUTATIONAL GEOSCIENCES,2020:11. |
| APA | Zhang, Liwei.,Miao, Xiuxiu.,Wang, Bin.,Liu, Hejuan.,Wang, Yan.,...&Li, Xiaochun.(2020).Uranium release surrounding a single fracture in a uranium-rich reservoir under geologic carbon storage conditions.COMPUTATIONAL GEOSCIENCES,11. |
| MLA | Zhang, Liwei,et al."Uranium release surrounding a single fracture in a uranium-rich reservoir under geologic carbon storage conditions".COMPUTATIONAL GEOSCIENCES (2020):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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