This startup is using microalgae to make carbon-neutral cement
“We don’t have to change anything about Portland cement production,” he says. No new equipment is required, and the product already meets existing standards. This could cut emissions by 60%, or, if combined with other changes, exceed 100%.”
August 10, 2022
Algae-grown limestone provides route to carbon-negative concrete
Researchers at the University of Colorado Boulder have developed a way of using algae to create carbon-neutral or even carbon-negative concrete. The researchers use biogenic lime limestone grown by algae instead of quarried limestone to make Portland cement, concrete’s key, and most carbon-intensive ingredient.
July 29, 2022
How scientists hope to use algae-grown limestone to build cities
The U.S. Department of Energy’s (DOE) Advanced Research Projects Agency-Energy (ARPA-E) has awarded the CU Boulder engineers and their colleagues at the National Renewable Energy Laboratory (NREL) and the Algal Resources Collection at the University of North Carolina Wilmington (UNCW) $3.2 million for their creative work. The ...
Sci Tech Daily
July 19, 2022
Cities of the future may be built with algae-grown limestone
Global cement production accounts for 7% of annual greenhouse gas emissions in large part through the burning of quarried limestone. Now, a CU Boulder-led research team has figured out a way to make cement production carbon neutral—and even carbon negative—by pulling carbon dioxide out of the air with the help of microalgae.
CU Boulder Today
June 23, 2022