TY - GEN
T1 - Using streamlines for highly-resolved, reactive transport for CO 2 leakage contamination in groundwater
AU - Atchley, Adam L.
AU - Maxwell, Reed M.
AU - Navarre-Sitchler, Alexis
AU - Siirla, Erica R.
AU - McCray, John E.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - We present a Lagrangian streamline approach where a large, heterogeneous 3D flow field is reduced to a number of ID transport simulations. The streamline approach allows the mapping of these ID reactive transport simulations back onto a 3D flow field, thus accounting for spatial heterogeneity within the aquifer and complex aqueous geochemical processes. A CO2 leakage scenario from a hypothetical CCS site is used where a resulting plume of CO2 lowers the groundwater pH and mobilizes metals from an existing mineral host-rock distribution. The plume migration and related metal dissolution and precipitation within the aquifer were simulated using this streamline- geochemical modelling approach under varying hydrological heterogeneity variances (σ2InK)- Results showed that heterogeneity significantly influences well contamination and geochemical processes.
AB - We present a Lagrangian streamline approach where a large, heterogeneous 3D flow field is reduced to a number of ID transport simulations. The streamline approach allows the mapping of these ID reactive transport simulations back onto a 3D flow field, thus accounting for spatial heterogeneity within the aquifer and complex aqueous geochemical processes. A CO2 leakage scenario from a hypothetical CCS site is used where a resulting plume of CO2 lowers the groundwater pH and mobilizes metals from an existing mineral host-rock distribution. The plume migration and related metal dissolution and precipitation within the aquifer were simulated using this streamline- geochemical modelling approach under varying hydrological heterogeneity variances (σ2InK)- Results showed that heterogeneity significantly influences well contamination and geochemical processes.
KW - Carbon capture and storage
KW - Reactive transport
KW - Uncertainty analysis
UR - http://www.scopus.com/inward/record.url?scp=84877608039&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877608039&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84877608039
SN - 9781907161346
T3 - IAHS-AISH Publication
SP - 141
EP - 148
BT - Models - Repositories of Knowledge
T2 - 8th International Conference on Calibration and Reliability in Groundwater Modeling - Repositories of Knowledge, ModelCARE 2011
Y2 - 18 September 2011 through 22 September 2011
ER -