Simulation of uranium mobilization potential in a deep aquifer under geological carbon storage conditions
文献类型：期刊论文
| 作者 | Wang, Qihuang5; Miao, Xiuxiu2,3; Wang, Yan2; Gan, Manguang2,3; Aftab, Syed Mobashar4; Li, Xiaochun2,3 ; Zhang, Liwei2,3; Wang, Zimeng1,5
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| 刊名 | APPLIED GEOCHEMISTRY
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| 出版日期 | 2020-07-01 |
| 卷号 | 118页码:9 |
| 关键词 | Uranium Groundwater contamination Geologic carbon storage Carbonate complexation Reactive transport modeling TOUGHREACT |
| ISSN号 | 0883-2927 |
| DOI | 10.1016/j.apgeochem.2020.104620 |
| 英文摘要 | Geological carbon storage is considered as a promising strategy to reduce greenhouse gas emissions. For those subsurface systems with uranium -bearing minerals in rock formations, there is an uncharacterized possibility for injected CO2 to cause uranium mobilization due to the coupled chemical and physical interactions at mineral- water interfaces. We developed a TOUGHREACT model to assess the uranium mobilization potential from uraninite (UO2) dissolution induced by CO2 injection into a hypothetical CO2 storage reservoir in a time scale of 30 years of CO2 injection and 100 years after. Numerical simulation results show that the concentration of HCO3- increased after CO2 injection, and CO2 was able to migrate toward the shallow aquifer through existing leakage pathways. HCO3- -assisted UO2 oxidative dissolution was the dominant mechanism that led to the increase of dissolved uranium concentration in a form of uranyl carbonate complex and the mechanism of H ? -assisted UO2 dissolution could be ignored. Sensitivity tests suggested that the increase of UO2 content and O-2 level in the CO2 storage reservoir resulted in the most significant increase of dissolved uranium concentration, but no sign of uranium intrusion was predicted up to the shallow aquifer. In summary, uranium release induced by CO2 in- jection is possible if the target CO2 storage reservoir contains U -bearing minerals and is exposed to oxidizing environment, but our simulation assured that significant upward migration of uranium from deep CO2 storage reservoir driven by CO2 injection is unlikely even at the worst scenario. |
| 资助项目 | National Science Foundation of China[21806021] ; National Science Foundation of China[41977266] ; National Science Foundation of China[41807275] ; National Science Foundation of China[41902258] ; National Science Foundation of China[U1967208] ; National Science Foundation for Postdoctoral Scientists of China[2018M632948] ; CASITRI collaborative research fund[CAS-ITRI2019011] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000544889100013 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24467]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Liwei; Wang, Zimeng |
| 作者单位 | 1.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Balochistan Univ IT Engn & Management Sci, Quetta, Pakistan 5.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qihuang,Miao, Xiuxiu,Wang, Yan,et al. Simulation of uranium mobilization potential in a deep aquifer under geological carbon storage conditions[J]. APPLIED GEOCHEMISTRY,2020,118:9. |
| APA | Wang, Qihuang.,Miao, Xiuxiu.,Wang, Yan.,Gan, Manguang.,Aftab, Syed Mobashar.,...&Wang, Zimeng.(2020).Simulation of uranium mobilization potential in a deep aquifer under geological carbon storage conditions.APPLIED GEOCHEMISTRY,118,9. |
| MLA | Wang, Qihuang,et al."Simulation of uranium mobilization potential in a deep aquifer under geological carbon storage conditions".APPLIED GEOCHEMISTRY 118(2020):9. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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