Carbfix

Carbfix is an Icelandic company that has developed an approach to capturing and storing CO₂ in water, and its injection into subsurface basalts. Once in the subsurface, the injected CO₂ reacts with the host rock forming stable carbonate minerals, thus providing storage of the captured gas.

Approximately 200 tons of CO₂ were injected into subsurface basalts in 2012. Research results published in 2016 showed that 95% of the injected CO₂ was solidified into calcite within 2 years, using 25 tons of water per tonne of CO₂. Since this time this approach has been upscaled at Hellisheiði and ongoing research is implementing this approach at other sites across Europe.