Abstract
In carbon dioxide capture and storage operations (CCS), impurities in CO2 flue gas are an important aspect concerning the geochemical reactions between the injected gas, the rock minerals in a storage reservoir and the brine. Numerical reactive transport simulations are capable to evaluate the main mineral reactions and their spatial and temporal occurrences in the reservoir under the impact of co-injected impurities. For the inclusion of the impurities in such simulations, different modeling approaches are evaluated (additional brine injection, trace gas transport, or a combination of the two). The impact of the chosen approach on qualitative and quantitative results of the simulations is discussed in this study using the recently released program TOUGHREACT V3.0-OMP.
Published Version
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