CO2 removal is a necessity
Designed for scale, engineered for impact
How our Direct Air Capture system works
Using limestone like a sponge
Limestone is made up of calcium oxide and CO2. When CO2 is removed from limestone, the remaining calcium oxide acts like a sponge – absorbing CO2 so it can return to its natural limestone state. Our technology accelerates this natural property of limestone, reducing the time it takes to absorb CO2 from years to just 3 days.
Removing CO2 from limestone
We heat limestone mineral powder in a renewable-energy powered kiln to remove the CO2. Our partners then permanently and safely sequester this CO2 in deep geological reservoirs, or in long-lasting materials like concrete.
Soaking up CO2 from the atmosphere
Once the CO2 is removed, we spread this mineral powder onto vertically-stacked trays and “treat” it to optimize its ability to uptake CO2 in different environmental conditions.
Repeating the process
Like repeatedly wringing a sponge, we loop this limestone mineral powder through our system to continuously suck CO2 from the atmosphere – a cyclic process that not only lowers costs but also reduces how much limestone must be mined.