Basalt Reactivity with CO2 and H2O: Implications for Carbon Sequestration

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Abstract

Climate change causes widespread concern and carbon capture and storage is considered as the most effective method to ameliorate the situation. Basalt rocks, a sort of geological storage sites, have a good capacity, injectivity and confinement. This review indicates the interior formations of basalts and explained the injected CO2 distribution in the basalts. The conditions of basalt rocks can be thought as a function of depth from the ground surface and this is important for real project injection. Physical and chemical properties of basalts are key factors to be considered in the study of CO2 storage process. Kinetics of CO2 and basalt’s dissolution as well as precipitation are explained. As a two-phase flow system, studying capillary pressure and saturation of CO2-brine system in basalts is also important in the study of storage processes

Keywords: Basalts, storage, dissolution, injection, precipitation

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