Evaluation of interactions between sandstone, basalt, and granite with CO2 and water based on in-situ pH measurement and geochemical simulation
文献类型：期刊论文
| 作者 | Cai, Yuna3; Yang, Diansen3; Lei, Hongwu2; Xue, Quan1,3; Liu, Yuyi3 |
| 刊名 | GAS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 139页码:14 |
| 关键词 | Rock-CO 2-Water interaction In-situ pH monitoring Modeling Sandstone Basalt Granite |
| ISSN号 | 2949-9097 |
| DOI | 10.1016/j.jgsce.2025.205619 |
| 英文摘要 | As CO2 geological utilization and storage becomes a promising strategy for reducing excess CO2, the interactions among host rock, groundwater, and CO2 become an inevitable process that demands careful consideration. Despite considerable research on this process, few studies have monitored the in-situ pH evolution of the rockCO2-water system under high pressure and temperature and integrated these findings with numerical models to deduce the underlying mechanisms. In this study, four different rock-CO2-water interaction experiments under conditions of 15 MPa and 50 degrees C, equipped with spectroscopic in-situ pH measurement, are carried out, and the water chemistry and mineral compositions are also determined. Validated geochemical models are then established to investigate the long-term interaction characteristics and identify the controlling reactions in different systems. The results show that pH variations of the sandstone and granite-contained system are mainly controlled by the dissolution of carbonate minerals, while the dissolution of diopside dominates pH in the basalt-contained system. Consequently, pH stabilization occurs significantly ahead of the system's interaction equilibrium. Moreover, the long-term interactions within these systems exhibit obvious stage characteristics, driven by the varying reactivities of the minerals involved. The carbon mineralization potentials of different rock samples are assessed afterwards, with basalt demonstrating superior performance, followed by sandstones, whereas granite exhibits no capacity for carbon fixation. This work provides new experimental data and offers insights into the mechanisms governing rock-CO2-water interactions. It is hoped that these findings will provide new perspectives on the experimental and simulation approaches, as well as deepen the mechanistic understanding of rock-CO2-H2O interactions in the context of CO2 geological utilization and storage. |
| 资助项目 | National Natural Science Foundation of China[42307225] ; National Natural Science Foundation of China[U22A20595] ; National Key Research and Development Program of China for Young Scientists[2023YFB4104100] ; CNPC Innovation Found[2021 D002-1102] ; Hubei Province Postdoctoral Innovation Research Position Funding |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001473521900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35875]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Diansen |
| 作者单位 | 1.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Yuna,Yang, Diansen,Lei, Hongwu,et al. Evaluation of interactions between sandstone, basalt, and granite with CO2 and water based on in-situ pH measurement and geochemical simulation[J]. GAS SCIENCE AND ENGINEERING,2025,139:14. |
| APA | Cai, Yuna,Yang, Diansen,Lei, Hongwu,Xue, Quan,&Liu, Yuyi.(2025).Evaluation of interactions between sandstone, basalt, and granite with CO2 and water based on in-situ pH measurement and geochemical simulation.GAS SCIENCE AND ENGINEERING,139,14. |
| MLA | Cai, Yuna,et al."Evaluation of interactions between sandstone, basalt, and granite with CO2 and water based on in-situ pH measurement and geochemical simulation".GAS SCIENCE AND ENGINEERING 139(2025):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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