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Posts Tagged ‘mineral sequestration’

The first talk I attended was on a subject I am not very familiar with: carbon sequestration. As reducing CO2 emissions to the atmosphere is becoming a priority, much effort is being made on developing ways of sequestrating CO2. What I learned from the talk of prof. S. Gislason, from U. of Iceland, was that storage in basaltic rock, found for exemple in oceanic ridges, is best suited for CO2 sequestrations because it enables the formation of mineral CO2. On the contrary, CO2 sequestration relying solely on structural confinement (i.e. in depleted oil reservoirs, as it is done in US or Canada) or even CO2 dissolution (i.e. in deep saline formations in Norway) is less stable and therefore likely to release CO2 over time. A carbon sequestration project is starting at the Hellisheidi power station in Iceland. This pioneering project involves taking some of the CO2 emitted from the power plant and sequestering it in a nearby basaltic formation. I suggest you visit their website (www.carbfix.com) to follow their progress. Those who have access to the journal Elements can also consult Gislason’s paper in the October 2008 issue that is entirely dedicated to Carbon Dioxide Sequestration.

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