Direct Air Capture, powered by nature
THE OPPORTUNITY
A natural carbon sink
Mineral carbonation, the reaction of CO₂ with metal oxides to create carbonates, occurs naturally around the world.
Limestone, or calcium carbonate, comprises approximately 15% of the Earth's sedimentary crust, making it a critical global carbon sink.
By harnessing the natural ability of limestone and similar carbonates, we can permanently remove CO₂ at the gigatonne level.
THE CATCH
We need zero carbon lime
If we are to enhance this natural process to remove atmospheric CO₂, we need to produce zero carbon calcium oxide, commonly known as lime. And lots of it. This can act as a “carbon sponge”, absorbing atmospheric CO₂ by forming calcium carbonate.
However, current methods for producing 1 tonne of lime emit approximately 1 tonne of CO₂, negating any environmental benefit from mineral carbonation.
OUR SOLUTION
Greener, circular & modular lime production, allowing lime to act as a carbon sink
Renewably powered kilns
Our advanced kilns can run on renewable energy sources, with a proprietary process allowing the easy capture of CO₂ for permanent sequestration by our partner organisations.
Avoiding harmful quarrying
We don’t use virgin limestone. Quarrying causes significant environmental damage; our process does not require it.
Allowing nature to work its magic
Our lime will naturally undergo mineral carbonation. This means for every 10 tonnes of lime produced, we will remove up to 7.86 tonnes of CO₂ from the atmosphere.
WHY CALCIN8?
Gigatonne removal potential
Anything smaller
isn't going to cut it
Tomorrow's
prices today
We can’t wait for “at scale” removal prices
Harnessing nature's power
Because nature knows best