Experimental and simulation studies on mineral trapping of CO2 with brine

The reaction of carbon dioxide (CO2) with brine samples collected from the Oriskany Formation in Indiana County, PA, was investigated in an autoclave reactor under various conditions. A geochemical code, PHREEQC, was used as to simulate the reaction in the autoclave reactor. The combined experimental and modeling data suggests that pH (pH > 9) plays a key role in the formation of carbonate minerals. The effects of temperature and CO2 pressure have a lesser impact on the formation of carbonate minerals