Ambient weathering of magnesium oxide for CO2 removal from air.
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ABSTRACT:
SUBMITTER: McQueen N
PROVIDER: S-EPMC7335196 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
Publications
Ambient weathering of magnesium oxide for CO<sub>2</sub> removal from air.
McQueen Noah N Kelemen Peter P Dipple Greg G Renforth Phil P Wilcox Jennifer J
Nature communications 20200703 1
To avoid dangerous climate change, new technologies must remove billions of tonnes of CO<sub>2</sub> from the atmosphere every year by mid-century. Here we detail a land-based enhanced weathering cycle utilizing magnesite (MgCO<sub>3</sub>) feedstock to repeatedly capture CO<sub>2</sub> from the atmosphere. In this process, MgCO<sub>3</sub> is calcined, producing caustic magnesia (MgO) and high-purity CO<sub>2</sub>. This MgO is spread over land to carbonate for a year by reacting with atmospher ...[more]
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