Abstract
Laboratory column experiments using crushed marly limestone, bituminous black shale and marl were conducted under different PTotal-pCO2 (atmospheric: 1-10-3.5, subcritical: 10-10 bar and supercritical: 150-37 bar) and T (25 and 60°C) conditions and using different input solutions (gypsum-undersaturated and gypsum-equilibrated). 1D reactive transport modeling was performed to quantify the overall process of gypsum precipitation at the expense of calcite dissolution in CO2-rich solutions together with minor dissolution of albite and clinochlore.
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