Calcium Carbonate
topic on 2 shows · 2 statements across 2 episodes
2 statements about Calcium Carbonate, every show
Heirloom's lime trays capture atmospheric CO2 and become limestone within days
“We stack these baking trays vertically To, you know, 2030, 40, 50 feet, and you effectively have a very tall baking rack with trays with thin layers of lime, and as the air passes through, basically gobbles up that CO₂, and in a few days it turns into calcium …”
Ellis: Concrete absorbs CO2 over centuries, acting as a carbon sink
“Cement, Portland cement does recarbonate over time. So if you have like a piece of pavement, for example, it will continue to absorb CO₂ from the atmosphere over timescales of, you know, Decades to hundred years or millennia will totally turn back into calcium…”