ºÚÁÏÊÓƵ

Perbas

PERBAS - Permanent sequestration of gigatons of CO2 in continental margin basalt deposits

The EU climate protection measures aim to make the European economy climate-neutral by 2050 and prevent climate change from progressing. In order to permanently stabilise this transformation of our society, in addition to avoiding CO2emissions in the future, it is already necessary to permanently remove large quantities of CO2 from the atmosphere today. The necessary storage capacities of 40 million tonnes per year will probably have to be increased to 20 gigatonnes per year and can only be achieved through a global joint effort by geological storage of CO2. After a changeover in society, a few technologies (cement, waste incineration, etc.) will still not be able to manage without CO2emissions. In the long term, CCS can only provide permanent storage for these small residual stocks. For storage to be economically and climatically viable, the CO2 must be stored for several thousand years without potential leaks. With conventional CCS, the injected CO2 remains mobile for decades and is therefore at risk to tectonic or man-made disturbances in the geological formation, which can lead to leakages. CO2 storage in basalt complexes offers an alternative solution. Test sites such as Carbfix (Iceland) and Wallula (USA) have confirmed that the injected CO2 reacts almost immediately with water and the volcanic host rock. This mineralization permanently stores the carbon as a solid (carbonate) in the pore spaces of the reservoir rock, with more than 90 % of the injected CO2 converted within two years. Flood basalts on continental margins provide an estimated 40 Tt of volume for carbon storage worldwide. Offshore CCS in such basalt complexes represents a compelling alternative. Potential storage sites are located away from other utilization interests such as wind power, fisheries and shipping lanes. Potential storage sites have no connection to groundwater reservoirs and are located far away from settlement areas. PERBAS investigates such flood basalts using examples in Norway (Vøring Plateau) and India (Deccan Traps) to provide recommendations for the classification of flood basalts, the characterization of storage sites and monitoring after CO2 injection.

June, 2023

May, 2026

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832000

BMBF /

Helmholtz-Zentrum für Ozeanforschung Kiel (ºÚÁÏÊÓƵ), Germany

Jörg Bialas

Volcanic Basin Energy Research AS, Norway
TEEC GmbH, Germany
Institute for Energy Technology, Norway
UiT The Arctic University of Norway, Norway
Lawrence Berkely National Laboratory, USA Colorado School of Mines, USA National Geophysical Research Institute, India
Indian Institute of Technology Roorkee, India
Indian Institute of Science Education and Research Bhopal, India