Growing minerals for portland cement and concrete using photosynthetic microalgae that sequester and store carbon dioxide in biogenic limestone
Minus Materials’ technology focuses on allowing the cement and concrete industries to continue using Portland cement while removing the emissions related to calcination of limestone. By capturing CO2 to create a biogenic limestone, the CO2 released during calcination in Portland cement production results in net zero CO2 emissions. Minus Materials’ biogenic limestone can used as a limestone filler in concrete to reduce the carbon footprint up to ~35% depending on local standards regarding limestone and calcium carbonate addition.
Location: Boulder, CO, USA