In his work on CO2 capture and storage via carbon mineralization, Dr. Peter Kelemen has increasingly concentrated on developing low cost methods for CO2 removal from air (CDR). He’s come to a realization that various processes, sometimes termed “enhanced weathering” as well as carbon mineralization, might offer comparatively low cost routes to CDR at the scale of gigatons per year. In this talk, Dr. Kelemen will elaborate on two such methods, one involving MgO- or CaO-looping, and another using highly engineered Direct Air Capture machines to enrich air to a few weight percent CO2, and then using that to enhance CO2 concentration in water circulating through reactive rocks in the subsurface.

Lecture presented by: Dr. Peter Kelemen, Arthur D. Storke Professor in Columbia University’s Dept. of Earth & Environmental Sciences, based at Lamont Doherty Earth Observatory.

This lecture was presented by on Friday, December 4, 2020 and was hosted by the Department of Geoscience, University of Calgary.

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