Turbo-charging the slow carbon cycle

CGTN Europe

The ocean plays a key role in absorbing carbon, through geographical carbon cycling or the slow carbon cycle. Italian start-up Limenet has big plans to use limestone to turbo-charge this natural phenomenon, capturing carbon AND countering ocean acidification.  Watch the full #RAZOR episode: 👉 https://youtu.be/wmcg3YIk9mw  #razor #razor_science #razor_science_show #razorscienceshow #science #sciencetok #carboncapture #acidocean #oceanacidification #sicily #slowcarboncycle #limenet

Transcript

00:00The ocean's natural ability to absorb carbon has guaranteed life on Earth,

00:09creating ideal conditions for the tiny marine organisms at the base of the food chain.

00:15But the more carbon we emit, the more acidic the ocean becomes.

00:20So we came up with this idea of LimeNet to try to industrialize the natural process

00:26which is the geological carbon cycle in which natural CO2 is captured by a rock.

00:31This limestone is able basically to capture it naturally and then to store it here in the ocean in a permanent way.

00:40Geological carbon cycling is how carbon moves between the Earth's atmosphere, rocks and the oceans over millions of years.

00:50Carbon dioxide mixes with rainwater to form carbonic acid or H2CO3 which slowly breaks down rocks.

01:00This releases bicarbonate, calcium and other ions which flow through rivers eventually reaching the ocean.

01:08Here the calcium and bicarbonate ions remain stable in the sea, locking carbon away for thousands of years.

01:17LimeNet's plan is to accelerate this natural process and this in turn will reduce the ocean's acidity or put simply will make it more alkaline.

01:29For more head to YouTube and search for Razor Science Show.

01:35See you next time!!

01:36The divided producer of Free Guide 46

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