Carbon-removing sand made of the mineral olivine is added to the ocean. There, the sand dissolves, countering ocean acidification and permanently removing carbon dioxide from the atmosphere.
Olivine is a widely abundant volcanic mineral. It makes up over 50% of the Earth's upper mantle, and is the most effective mineral for enabling CO2 removal through rock weathering.
Through Coastal Carbon Capture, carbon dioxide stays locked for years.
We love trees, and want many more of them planted. But they require lots of arable land, and the carbon they capture is released if they ever burn.
Regenerative agriculture is mandatory for a healthy future, but it's not enough to count on as a carbon sequestration method: it's not permanent, and it demands a lot of land.
DAC is impressive, but expensive. Plus, when DAC is productized, it often puts carbon back into the atmosphere or into waste streams.
With only 0.1%-0.25% of shelf seas we could capture 1 gigatonne of CO2.
Coastal Carbon Capture utilizes the free energy of waves to grind and crush the olivine.
We don’t need any clever new technology breakthroughs... It's ready for development now.
Available on every continent and making up over 50% of the upper mantle, olivine is globally abundant and accessible.
Sequester carbon for
as little as $35 / tonne.
At full scale, costs less than 10% of the price of other carbon capture technologies.
For every tonne of CO2 emitted in the process of extraction and transportation of olivine, 20 tonnes of CO2 are removed from the atmosphere (~95% efficiency).
Coastal Carbon Capture can also support de-acidification in the local ocean ecosystem.
