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What happens to CO2 when it is stored underground in rock formations and saline aquifers (salt water)?

April 26, 2017aquifers CO2 formations happens rock saline Salt stored underground water

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What happens to CO2 when it is stored underground in rock formations and saline aquifers (salt water)?

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When CO2 is stored underground, approximately 40% of the CO2 is very quickly trapped in the rock and cannot move – it is irretrievable. Over time the remaining CO2 dissolves in the saline aquifer (salt water). When it is dissolved in salt water, CO2 makes the water heavier.