TY - GEN
T1 - Geological CO2 storage
T2 - 2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014
AU - Kim, Seunghee
AU - Santamarina, J. Carlos
PY - 2014
Y1 - 2014
N2 - Carbon capture and geological sequestration (CCS) emerges as an important alternative to mitigate global warming. The injection of supercritical CO 2 triggers CO2 dissolution, water acidification, mineral dissolution, and transport. We investigate reactive fluid transport at the pore- and rock-joint scales using published kinetic rate laws for dissolution reactions in calcite, CaCO3, and anorthite CaAl2Si 2O8. Reactivity is coupled with Navier-Stokes law and advection-diffusion transport equations to numerically investigate the evolution of the pore geometry, flow patterns, and species concentrations in soil and rocks. Numerical results are analyzed in terms of two dimensionless numbers, the Damköhler and Peclet numbers. Observed trends provide insight into the interplay among flow parameters including advection, diffusion, chemical reactions, and the evolution of the porous network in different transport-reaction regimes relevant to CO2 injection and geological storage.
AB - Carbon capture and geological sequestration (CCS) emerges as an important alternative to mitigate global warming. The injection of supercritical CO 2 triggers CO2 dissolution, water acidification, mineral dissolution, and transport. We investigate reactive fluid transport at the pore- and rock-joint scales using published kinetic rate laws for dissolution reactions in calcite, CaCO3, and anorthite CaAl2Si 2O8. Reactivity is coupled with Navier-Stokes law and advection-diffusion transport equations to numerically investigate the evolution of the pore geometry, flow patterns, and species concentrations in soil and rocks. Numerical results are analyzed in terms of two dimensionless numbers, the Damköhler and Peclet numbers. Observed trends provide insight into the interplay among flow parameters including advection, diffusion, chemical reactions, and the evolution of the porous network in different transport-reaction regimes relevant to CO2 injection and geological storage.
UR - http://www.scopus.com/inward/record.url?scp=84906841342&partnerID=8YFLogxK
U2 - 10.1061/9780784413272.260
DO - 10.1061/9780784413272.260
M3 - Conference contribution
AN - SCOPUS:84906841342
SN - 9780784413272
T3 - Geotechnical Special Publication
SP - 2695
EP - 2704
BT - Geo-Congress 2014 Technical Papers
PB - American Society of Civil Engineers (ASCE)
Y2 - 23 February 2014 through 26 February 2014
ER -