Ambient weathering of magnesium oxide for CO2 removal from air

Abstract

To remove CO2 from the atmosphere every year by mid-century will need new technologies. Here the authors proposed the use of magnesia (MgO) in ambient looping processes to remove CO2 from the air and they found that the proposed approach will cost $46–195 tCO2 −1 net removed from the atmosphere considering both grid and solar electricity resources without including post-processing costs.