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Free keywords:
carbon dioxide; dissolved; storage capacity; numerical simulation; saline aquifer; Buntsandstein
Abstract:
Geological CO2 storage is a mitigation technology to reduce CO2 emissions from fossil fuel combustion. However, major
concerns are the pressure increase and saltwater displacement in the mainly targeted deep groundwater aquifers due to injection of supercritical CO2. The suggested solution is storage of CO2 exclusively in the dissolved state. In our exemplary regional case study of the North East German Basin based on a highly resolved temperature and pressure distribution model and a newly developed reactive transport coupling, we have quantified that 4.7 Gt of CO2 can be stored in solution compared to 1.5 Gt in the supercritical state.
