Brimstone Energy, a California-based startup, is one of several companies trying to reduce the carbon emissions from the production of cement, which accounts for about 8% of global carbon emissions.
Unlike limestone, however, the silicate rock contains no CO2, so there are no such emissions associated with the production process.
Last July it received certification that its product is essentially the same as Portland cement.
Not only does the silicate rock Brimstone uses not emit carbon, it actually absorbs carbon.
"Ultimately, our plan, our goal would be to develop a credibly lower-cost process to make Portland cement at scale.
Persons:
Cody Finke, Finke, Cooper, Lisa Rizzolo
Organizations:
Brimstone Energy, Breakthrough Energy Ventures, DCVC, Fund, S2G Ventures, CNBC
Locations:
California, Portland