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Full-Text Articles in Physical Sciences and Mathematics
A Natural Analogue In Southwest Wyoming For Geologic Co-Sequestration Of Carbon & Sulfur, John Kaszuba, A. Navarre-Sitchler, G. Thyne, C. Chopping
A Natural Analogue In Southwest Wyoming For Geologic Co-Sequestration Of Carbon & Sulfur, John Kaszuba, A. Navarre-Sitchler, G. Thyne, C. Chopping
John Kaszuba
Meeting abstract for “A Natural Analogue in Southwest Wyoming for Geologic Co-Sequestration of Carbon & Sulfur,” June 2010.
Relative Stability And Significance Of Dawsonite And Aluminum Minerals In Geologic Carbon Sequestration, John Kaszuba, H. S. Viswanathan, J. W. Carey
Relative Stability And Significance Of Dawsonite And Aluminum Minerals In Geologic Carbon Sequestration, John Kaszuba, H. S. Viswanathan, J. W. Carey
John Kaszuba
Computer simulations predict dawsonite, NaAlCO(3)(OH)(2), will provide long-term mineral sequestration of anthropogenic CO(2) whereas dawsonite rarely occurs in nature or in laboratory experiments that emulate a carbon repository. Resolving this discrepancy is important to determining the significance of dawsonite mineralization to the long-term security of geologic carbon sequestration. This study is an equilibrium-based experimental and modeling evaluation of underlying causes for inconsistencies between predicted and observed dawsonite stability. Using established hydrothermal methods, 0.05 molal NaHCO(3) aqueous solution and synthetic dawsonite were reacted for 18.7 days (449.2 hours) at 50 degrees C, 20 MPa. Temperature was increased to 75 degrees C …