TY - JOUR
T1 - Multivariate statistical evaluation of groundwater compliance data from the Illinois Basin - Decatur Project
AU - Iranmanesh, Abbas
AU - Locke, Randall Anthony
AU - Wimmer, Bracken T.
N1 - Staff of the Illinois State Geological Survey contributed to field sampling efforts (Carl Carman and Chris Patterson), and data management (Damon Garner). Chemical analyses were performed by PDC Laboratories and the Illinois State Water Survey, Public Service Laboratory. We also greatly appreciate the thorough and insightful reviews of manuscript drafts by Ivan Krapac of the ISGS. This research was funded by the U.S. Department of Energy through the National Energy Technology Laboratory (NETL) Regional Carbon Sequestration Partnership Program (contract number DE-FC26-05NT42588) and by a cost share agreement with the Illinois Department of Commerce and Economic Opportunity, Office of Coal Development through the Illinois Clean Coal Institute.
PY - 2014
Y1 - 2014
N2 - Principal Component Analysis (PCA) was used to evaluate groundwater quality data acquired in the pre-injection and injection periods for the Illinois Basin - Decatur Project (IBDP), a large-scale carbon capture and storage (CCS) project located in Decatur, Illinois, USA. For the pre-injection and injection periods three principal components explained 76.6% and 80.0% of the total data variance, respectively. Analysis of the pre-injection data set determined that highly positive loadings for total dissolved solids, chloride, bromide, sodium, magnesium, potassium, and electrical conductance designated the first component (PC1) as the salinity factor. High loadings for calcium, iron, and sulfate in component two (PC2) represents an oxidation-reduction component. The third component (PC3) represents groundwater acidity because of highly positive loading of pH. For the injection data set the variables contributed to the first component are bromide, sodium, total dissolved solids, chloride, electrical conductance, potassium, sulfate, iron, and calcium. Sulfate, magnesium, and calcium contribute to the second component and pH to the third component and represent salinity, dissolution, and acidity of groundwater. The results of the PC analysis indicate that water-rock interactions are the primary mechanism governing groundwater quality during both periods. The results of this analysis indicate that CO2 injection activities have not impacted the quality of the shallow groundwater in the project area.
AB - Principal Component Analysis (PCA) was used to evaluate groundwater quality data acquired in the pre-injection and injection periods for the Illinois Basin - Decatur Project (IBDP), a large-scale carbon capture and storage (CCS) project located in Decatur, Illinois, USA. For the pre-injection and injection periods three principal components explained 76.6% and 80.0% of the total data variance, respectively. Analysis of the pre-injection data set determined that highly positive loadings for total dissolved solids, chloride, bromide, sodium, magnesium, potassium, and electrical conductance designated the first component (PC1) as the salinity factor. High loadings for calcium, iron, and sulfate in component two (PC2) represents an oxidation-reduction component. The third component (PC3) represents groundwater acidity because of highly positive loading of pH. For the injection data set the variables contributed to the first component are bromide, sodium, total dissolved solids, chloride, electrical conductance, potassium, sulfate, iron, and calcium. Sulfate, magnesium, and calcium contribute to the second component and pH to the third component and represent salinity, dissolution, and acidity of groundwater. The results of the PC analysis indicate that water-rock interactions are the primary mechanism governing groundwater quality during both periods. The results of this analysis indicate that CO2 injection activities have not impacted the quality of the shallow groundwater in the project area.
KW - Carbon storage
KW - Groundwater
KW - Illinois basin
KW - Multivariate evaluation
KW - Principal component analysis
KW - Water quality
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U2 - 10.1016/j.egypro.2014.11.343
DO - 10.1016/j.egypro.2014.11.343
M3 - Conference article
AN - SCOPUS:84922896583
SN - 1876-6102
VL - 63
SP - 3182
EP - 3194
JO - Energy Procedia
JF - Energy Procedia
T2 - 12th International Conference on Greenhouse Gas Control Technologies, GHGT 2014
Y2 - 5 October 2014 through 9 October 2014
ER -