Conducting Batch Reactions at Relevant Geologic Carbon Sequestration Condtions
Geologic carbon sequestration (GCS) is needed to mitigate global warming caused by increased atmo- spheric CO₂ concentrations. For safe and efficient GCS operations the geochemical reactions with CO₂-brine-rock under relevant GCS conditions needs to be studied. For this application CO₂-brine-biotite interac- tions were studied and fibrous illite formation was observed after reaction for only 3 hours. The fibrous illite detached and released into solution after longer reaction time, indicating potential permeability decrease in the aquifer, as fibrous illite can clog the pore spaces affecting further CO₂ injections.
rock/water ratio: 1 piece of biotite flake and 4 ml solution, 0.015 g/4 ml
Elapsed time: 3, 5, 8, 1722, 44, 70, 96, 120, 144 h.
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