<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Assessment of CO2/shale interfacial tension"^^ . "Caprocks/CO2 interfacial tension (γsc) is an essential parameter that helps to provide insights into the interaction between CO2and caprocks. Lower values of γsc suggest stronger CO2- caprocks interaction (lower CO2capacity is inferred) and vice versa. Rocks/CO2 interfacial tension also explains why different minerals have different wettability to CO2 at the same pressure and temperature. Two caprock samples acquired from a potential CO2 storage site in New South Wales in Australia were used in this work. All the laboratory measurements were conducted at varying pressure from 5 MPa to 20 MPa and a temperature of 343 K. Our findings suggest that solid/CO2 interfacial tension (γsc) in caprocks is highly dependent on total organic carbon (TOC) percentage, pressure, and quartz content. γsc in sample-2 of higher TOC and quartz (TOC =0.11 wt, quartz = 62) is lower than γsc in sample-1 of lower TOC and quartz (TOC =0.081 wt, quartz = 31. The higher percentage of TOC and quartz increases the hydrophobic sites available in the sample, allowing stronger affinity towards CO2. Lower interfacial tension implies a stronger affinity of CO2 towards caprock surface (the high chance that CO2 will enter through caprocks and causes leakage). Therefore, it can be inferred that high TOC caprocks offer a lower CO2 trapping integrity, hence reducing their CO2 storage capacity. A remarkable relationship between solid/CO2 interfacial tension and CO2 density�which is easy to determine � at different pressures (up to 20 MPa) and 343 K temperature was also demonstrated in this work. This insight can significantly enhance Carbon Geosequestration processes' fundamental understanding. © 2021 Elsevier B.V."^^ . "2021" . . "627" . . "Elsevier B.V."^^ . . . "Colloids and Surfaces A: Physicochemical and Engineering Aspects"^^ . . . "09277757" . . . . . . . . . . . . . . . . . . . . . . "M."^^ . "Ali"^^ . "M. Ali"^^ . . "N."^^ . "Yekeen"^^ . "N. Yekeen"^^ . . "A."^^ . "Al-Yaseri"^^ . "A. Al-Yaseri"^^ . . "Y."^^ . "Zhang"^^ . "Y. Zhang"^^ . . "H."^^ . "Abdulelah"^^ . "H. Abdulelah"^^ . . "B.M."^^ . "Negash"^^ . "B.M. Negash"^^ . . . . . "HTML Summary of #14355 \n\nAssessment of CO2/shale interfacial tension\n\n" . "text/html" . .