Friday seminars of Institute of Earth Sciences, February 27th 2026 - Sigurður Reynir Gíslason (Research Professor, Institute of Earth Sciences, University of Iceland)

February 27th - Sigurður Reynir Gíslason (Research Professor, Institute of Earth Sciences, University of Iceland)

Title: Rapid CO2 mineralization by its co-injection with recirculating water in the subsurface
Time: 12:30
Place: Askja, 3rd floor meeting room (room 367) and streamed virtually via Zoom:  

Zoom link

List of Friday seminars of Institute of Earth Sciences and Nordic Volcanological Center

Abstract:

The subsurface carbonation of CO2 by its reactions with basaltic or ultramafic rocks is a promising technology for permanent CO2 disposal. A major challenge to applying this process at scale is that it requires 20 to 50 times more water than the mass of CO2 stored. To overcome this challenge, we developed a new CO2 injection approach based on the recirculation of subsurface fluids, which effectively eliminates the need for external water. Demonstrated in Jizan, Saudi Arabia, this method achieved 70% mineralization of 131 tons of CO2 injected into 21- to 30-million-year-old basalts within ten months. Our results, thereby, demonstrate the feasibility of effective carbon mineralization in regions of our planet where access to water resources may be limited. 

All are welcome.