Carbonation of Clay Minerals Exposed to scCO2/Water at 200 degrees and 250 degrees C

• Main Authors: Sugama, T., Ecker, L., Gill, S., Butcher, T. (BNL), Bour, D. (AltaRock Energy, Inc.)
• Other Authors: United States. Department of Energy. Office of Energy Efficiency and Renewable Energy.
• Format: Report
• Language: English
• Published: Brookhaven National Laboratory 2010
• Subjects: By-Products; Leaching; Quartz; Feldspars; Clay; Water Carbonation; Carbon Dioxide; Minerals; Shrinkage; Clays; Montmorillonite; 32 Energy Conservation; Consumption; And Utilization; Kaolinite; Carbonation; Carbonic Acid; Dolomite; Carbonates; Cations; Bentonite; Silicon; Psi; Carbonic acid
• Online Access: https://doi.org/10.2172/1033188; https://digital.library.unt.edu/ark:/67531/metadc831933/

To clarify the mechanisms of carbonation of clay minerals, such as bentonite, kaolinite, and soft clay, we exposed them to supercritical carbon dioxide (scCO2)/water at temperatures of 200 and 250 C and pressures of 1500 and 2000 psi for 72- and 107-hours. Bentonite, comprising three crystalline pha...