In situ mineral carbonation is facilitated by aqueous-phase chemical reactions with dissolved CO 2 . Evidence from the laboratory and the field shows that the limiting factors for in situ mineral carbonation are the dissolution rate of CO 2 into the aqueous phase and the release rate of divalent cations from basic silicate minerals. Up to now, pilot CO 2 storage projects and commercial operations have focused on the injection and storage of anthropogenic CO 2 as a supercritical phase in depleted oil and gas reservoirs or deep saline aquifers with limited potential for CO 2 mineralization. The CarbFix Pilot Project will test the feasibility of in situ mineral carbonation in basaltic rocks as a way to permanently and safely store CO 2 . The test includes the capture of CO 2 flue gas from the Hellisheidi geothermal power plant and the injection of 2200 tons of CO 2 per year, fully dissolved in water, at the CarbFix pilot injection site in SW Iceland. This paper describes the design of the CO 2 injection test and the novel approach for monitoring and verification of CO 2 mineralization in the subsurface by tagging the injected CO 2 with radiocarbon ( 14 C), and using SF5CF3 and amidorhodamine G as conservative tracers to monitor the transport of the injected CO 2 charged water. © 2011 Published by Elsevier Ltd.
Matter, J. M., Broecker, W. S., Gislason, S. R., Gunnlaugsson, E., Oelkers, E. H., Stute, M., … Wolff-Boenisch, D. (2011). The CarbFix Pilot Project - Storing carbon dioxide in basalt. In Energy Procedia (Vol. 4, pp. 5579–5585). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2011.02.546