Evaluation of CO2 sorption capacity of rocks using a gravimetric method for CO2 geological sequestration

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Abstract

Sorption isotherms, which describe CO2 storage capacity of the host rock, are important for estimating the CO2 sequestration potential of geological formations. In this study, the sorption capacity of a sandstone and granite were evaluated experimentally by using a gravimetric method, and the experimental data corrected for the volume of sorbed CO2 phase were compared with storage models (adsorption monolayer, solubility and pore-filling models). The sorption measurement results indicated that CO2 sorption behavior could take place onto silica minerals in CO2-water-rock system, and it further indicated that CO2 sorption onto rocks may play an important role in storing CO2 in subsurface rock masses. © 2009 Elsevier Ltd. All rights reserved.

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Fujii, T., Sato, Y., Lin, H., Inomata, H., & Hashida, T. (2009). Evaluation of CO2 sorption capacity of rocks using a gravimetric method for CO2 geological sequestration. In Energy Procedia (Vol. 1, pp. 3723–3730). https://doi.org/10.1016/j.egypro.2009.02.171

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