Carbon dioxide (CO2) sorption to Na-rich montmorillonite at Carbon Capture, Utilization and Storage (CCUS) P-T conditions in saline formations
Krukowski, Elizabeth Gayle
MetadataShow full item record
Carbon capture, utilization and storage (CCUS) in confined saline aquifers in sedimentary formations has the potential to reduce the impact of fossil fuel combustion on climate change by storing CO2 in geologic formations in perpetuity. At PT conditions relevant to CCUS, CO2 is less dense than the pre-existing brine in the formation, and the more buoyant CO2 will migrate to the top of the formation where it will be in contact with cap rock. A typical cap rock is clay-rich shale, and interactions between shales and CO2 are poorly understood at PT conditions appropriate for CCUS in saline formations. In this study, the interaction of CO2 with clay minerals in the cap rock overlying a saline formation has been examined, using Na-rich montmorillonite as an analog for clay-rich shale. Attenuated Total Reflectance -- Fourier Transform Infrared Spectroscopy (ATR -FTIR) was used to identify potential crystallographic sites (AlAlOH, AlMgOH and interlayer space) where CO2 could interact with montmorillonite at 35"C and 50"C and from 0-1200 psi. Analysis of the data indicates that CO2 that is preferentially incorporated into the interlayer space, with dehydrated montmorillonite capable of incorporating more CO2 than hydrated montmorillonite. No evidence of chemical interactions between CO2 and montmorillonite were identified, and no spectroscopic evidence for carbonate mineral formation was observed. Further work is needed to determine if reservoir seal quality is more likely to be degraded or enhanced by CO2 - montmorillonite interactions.
- Masters Theses 
Showing items related by title, author, creator and subject.
Can carbon sequestration markets benefit low-income producers in semi-arid Africa? Potentials and challenges Perez, C.; Roncoli, C.; Neely, Constance; Steiner, J.L. (Elsevier Ltd, 2007)This article describes the framework for carbon sequestration markets provided by the Kyoto Protocol's Clean Development Mechanism (CDM). The CDM permits countries that are exceeding their permissible carbon emissions to ...
Amichev, Beyhan Y. (Virginia Tech, 2007-04-11)Carbon accreditation of forest development projects is essential for sequestering atmospheric CO2 under the provisions of the Kyoto Protocol. The carbon sequestration potential of surface coal-mined lands is not well known. ...
Options for increasing carbon sequestration in West African soils: An explanatory study with special focus on Senegal Batjes, N.H. (John Wiley & Sons, Ltd., 2001)This article begins with an overview of soil carbon stocks in Africa and West Africa. The authors then provide a general review of the suitability of different technical management approaches to increases soil organic ...