CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment
Wettability at mineral-CO2 interface in CGS (carbon geosequestration) is a key parameter for risk assessments and storage capacity estimations. Many studies of wettability achieved inconsistent results, while adhesion could be a potential mechanism causing huge wettability alteration. CO2 adhesion c...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/9275688 |
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| _version_ | 1832565598040621056 |
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| author | Jingyue Sun Haopo Xu Cong Chen Tonglai Li Weizhong Li Yan Qin |
| author_facet | Jingyue Sun Haopo Xu Cong Chen Tonglai Li Weizhong Li Yan Qin |
| author_sort | Jingyue Sun |
| collection | DOAJ |
| description | Wettability at mineral-CO2 interface in CGS (carbon geosequestration) is a key parameter for risk assessments and storage capacity estimations. Many studies of wettability achieved inconsistent results, while adhesion could be a potential mechanism causing huge wettability alteration. CO2 adhesion characteristics have been revealed for CO2/brine/mica system under a wide range of pressures, temperatures, and salinities by analyzing static and dynamic contact angles. Under all experiment conditions, the average static CA ranges from 19.5° to 32.1°. In 8 MPa experiments, CA decreases from 26.0° to 19.5° with the increasing salinity. Similar trends were also observed under 12 MPa condition. However, CA does not show clear dependence on pressure. A concentric probe was designed by which vertical position of the probe can be changed by rotating the screw of the probe holder while horizontal degrees of freedom are restricted. With this concentric probe, contact angles were obtained at different positions of the same sample to investigate the effect of heterogeneity of sample surface. Uncertainty and large hysteresis of dynamic contact angles were found which related with measurement positions. These large hystereses as obvious sign of adhesion had good repeatability at specific surface positions. Further electron microscope test demonstrated the correlation between large hysteresis and smoother surfaces which is consistent with the DLVO theory-based water film thickness hypothesis on adhesion. This study enriched the data on the wettability of mica and may shed light on CO2 adhesion on solid surfaces for better understanding the fate of CO2 during sequestration. |
| format | Article |
| id | doaj-art-9b89dce1211f48279e3177e2f0b4c959 |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-9b89dce1211f48279e3177e2f0b4c9592025-02-03T01:07:16ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/9275688CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration EnvironmentJingyue Sun0Haopo Xu1Cong Chen2Tonglai Li3Weizhong Li4Yan Qin5School of Energy and Power EngineeringSchool of Energy and Power EngineeringSchool of Energy and Power EngineeringBeijing Aerospace Propulsion InstituteSchool of Energy and Power EngineeringSchool of Energy and Power EngineeringWettability at mineral-CO2 interface in CGS (carbon geosequestration) is a key parameter for risk assessments and storage capacity estimations. Many studies of wettability achieved inconsistent results, while adhesion could be a potential mechanism causing huge wettability alteration. CO2 adhesion characteristics have been revealed for CO2/brine/mica system under a wide range of pressures, temperatures, and salinities by analyzing static and dynamic contact angles. Under all experiment conditions, the average static CA ranges from 19.5° to 32.1°. In 8 MPa experiments, CA decreases from 26.0° to 19.5° with the increasing salinity. Similar trends were also observed under 12 MPa condition. However, CA does not show clear dependence on pressure. A concentric probe was designed by which vertical position of the probe can be changed by rotating the screw of the probe holder while horizontal degrees of freedom are restricted. With this concentric probe, contact angles were obtained at different positions of the same sample to investigate the effect of heterogeneity of sample surface. Uncertainty and large hysteresis of dynamic contact angles were found which related with measurement positions. These large hystereses as obvious sign of adhesion had good repeatability at specific surface positions. Further electron microscope test demonstrated the correlation between large hysteresis and smoother surfaces which is consistent with the DLVO theory-based water film thickness hypothesis on adhesion. This study enriched the data on the wettability of mica and may shed light on CO2 adhesion on solid surfaces for better understanding the fate of CO2 during sequestration.http://dx.doi.org/10.1155/2022/9275688 |
| spellingShingle | Jingyue Sun Haopo Xu Cong Chen Tonglai Li Weizhong Li Yan Qin CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment Geofluids |
| title | CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment |
| title_full | CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment |
| title_fullStr | CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment |
| title_full_unstemmed | CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment |
| title_short | CO2 Adhesion Characteristics on Solid Surfaces under CO2 Geologic Sequestration Environment |
| title_sort | co2 adhesion characteristics on solid surfaces under co2 geologic sequestration environment |
| url | http://dx.doi.org/10.1155/2022/9275688 |
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