Post by account_disabled on Feb 19, 2024 2:55:51 GMT -4
Three pioneering startups, Heirloom, CarbonCure and Central Concrete, have managed to capture carbon dioxide using Direct Air Capture (DAC) and claim to have stored it permanently in concrete for the first time.
Californian company Heirloom captured CO from the atmosphere with its DAC technology at its California headquarters.
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CarbonCure's reclaimed water technology injected captured CO into wastewater from a Central Concrete plant in San Jose, California. And Central Concrete used CO - treated wastewater to make fresh concrete, which was produced for a number of construction projects throughout the Bay Area.
CO is permanently sequestered in Phone Number List concrete in the form of calcium carbonate and is not returned to the atmosphere, even if the concrete is demolished.
Today, Heirloom operates what it claims to be the only operational DAC facility in the United States. It uses limestone, an abundant, easy to obtain and cheap material, to extract CO from the air. Limestone is decomposed into calcium oxide and CO gas by heat from an electric furnace powered by renewable energy. The captured CO gas is permanently and safely stored underground or embedded in concrete.
How Heirloom and CarbonCure's DAC to Concrete Sequestration Process Works
CarbonCure's reclaimed water technology was used to store Heirloom's CO at Central Concrete. The technology injects CO into recovered water (recycled water collected from washing concrete trucks) at concrete plants. When injected, the CO immediately reacts with the cement in the water and mineralizes, permanently storing the CO and stabilizing the cement for reuse. The CO treated grout is then used in new concrete mixes.
The science is clear: to achieve climate goals, we must remove billions of tons of CO already emitted from the atmosphere each year. This is an important step towards that future and demonstrates the promise of DAC technologies combined with intelligent and permanent sequestration methods.
Shashank Samala, CEO of Heirloom.
The most used construction material in the world, concrete, constitutes an important reservoir for the permanent storage of CO . With the global building stock expected to double by , concrete represents a key opportunity to store huge amounts of carbon dioxide in our built environment.
Californian company Heirloom captured CO from the atmosphere with its DAC technology at its California headquarters.
Advertisement
CarbonCure's reclaimed water technology injected captured CO into wastewater from a Central Concrete plant in San Jose, California. And Central Concrete used CO - treated wastewater to make fresh concrete, which was produced for a number of construction projects throughout the Bay Area.
CO is permanently sequestered in Phone Number List concrete in the form of calcium carbonate and is not returned to the atmosphere, even if the concrete is demolished.
Today, Heirloom operates what it claims to be the only operational DAC facility in the United States. It uses limestone, an abundant, easy to obtain and cheap material, to extract CO from the air. Limestone is decomposed into calcium oxide and CO gas by heat from an electric furnace powered by renewable energy. The captured CO gas is permanently and safely stored underground or embedded in concrete.
How Heirloom and CarbonCure's DAC to Concrete Sequestration Process Works
CarbonCure's reclaimed water technology was used to store Heirloom's CO at Central Concrete. The technology injects CO into recovered water (recycled water collected from washing concrete trucks) at concrete plants. When injected, the CO immediately reacts with the cement in the water and mineralizes, permanently storing the CO and stabilizing the cement for reuse. The CO treated grout is then used in new concrete mixes.
The science is clear: to achieve climate goals, we must remove billions of tons of CO already emitted from the atmosphere each year. This is an important step towards that future and demonstrates the promise of DAC technologies combined with intelligent and permanent sequestration methods.
Shashank Samala, CEO of Heirloom.
The most used construction material in the world, concrete, constitutes an important reservoir for the permanent storage of CO . With the global building stock expected to double by , concrete represents a key opportunity to store huge amounts of carbon dioxide in our built environment.