Interfacial chemical mechanisms of brine salinity affecting the CO2 foam stability and its effect on the sequestration capacity of CO2 in deep saline aquifer
文献类型：期刊论文
| 作者 | Wen, Yiping1,2; Zhong, Yiyan1,2; Zeng, Peihua3; Li, Qi1,2
|
| 刊名 | JOURNAL OF MOLECULAR LIQUIDS
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 399页码:19 |
| 关键词 | CO 2 sequestration CO 2 foam Brine salinity Stabilization mechanism Molecular dynamics method |
| ISSN号 | 0167-7322 |
| DOI | 10.1016/j.molliq.2024.124349 |
| 英文摘要 | CO2 foam flooding is an important method to expand the sweep scope of CO2 and significantly improve the ability of sequestrate CO2 in saline aquifer. Salinity is an important factor affecting the CO2 foam stability. In this study, it was found that the stability of CO2 foam prepared by alkyl polyglycoside APG-0810 was effectively improved by increasing the salinity. Molecular dynamics studies showed that increasing salinity promoted the adsorption of APG-0810 molecules at the CO2-water interface and enhanced the degree of inter -entanglement between alkyl chain segments, which dramatically increasing the CO2-water interfacial activity and liquid film strength. The enrichment degree of metal ions around the APG-0810 hydrophilic group also enhanced with the increase of salinity, which improves the disjoining pressure of the bubble liquid film. The binding ability of the hydrophobic groups of APG-0810 on CO2 molecules was enhanced, which inhibited the diffusion process of CO2 molecules inside the bubble. Subsequently, the influence rules of salinity on the CO2 foam rheology in the core were studied, and finds that increasing salinity increase the transition foam quality and the corresponding maximum viscosity. The improvement of liquid film strength reduces the probability of bubble aggregation inside the core, allowing a sufficient number of small -sized bubbles to be trapped by the pores, strengthening the superposition of Jamin effect and expanding the CO2 sweep scope in saline aquifer. In addition, we found that the zero -shear viscosity and yield stress of CO2 foam are positively correlated with salinity, which means that CO2 foam has a higher blocking ability for preferential channel for high -salinity saline aquifer, and the bubble cluster trapped by the capillary force will have a higher starting -pressure, improving the safety of CO2 sequestration in saline aquifer. |
| 资助项目 | Natural Science Foundation of China[U2244215] ; China Post-doctoral Science Foundation[2023 M733711] ; Innovative Postdoctoral Research Funding of Hubei Province[2022000171] |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001211039600001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41229]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wen, Yiping |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CNPC Chuanqing Drilling Engn Co Ltd, Downhole Serv Co, Chengdu 610052, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Yiping,Zhong, Yiyan,Zeng, Peihua,et al. Interfacial chemical mechanisms of brine salinity affecting the CO2 foam stability and its effect on the sequestration capacity of CO2 in deep saline aquifer[J]. JOURNAL OF MOLECULAR LIQUIDS,2024,399:19. |
| APA | Wen, Yiping,Zhong, Yiyan,Zeng, Peihua,&Li, Qi.(2024).Interfacial chemical mechanisms of brine salinity affecting the CO2 foam stability and its effect on the sequestration capacity of CO2 in deep saline aquifer.JOURNAL OF MOLECULAR LIQUIDS,399,19. |
| MLA | Wen, Yiping,et al."Interfacial chemical mechanisms of brine salinity affecting the CO2 foam stability and its effect on the sequestration capacity of CO2 in deep saline aquifer".JOURNAL OF MOLECULAR LIQUIDS 399(2024):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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