Crustaceans would put a dent into it. It's why carbon levels fell from 4000ppm to where they are today.
All those shells absorb a lot of carbon over millions of years.
All those shells absorb a lot of carbon over millions of years.
https://www.frontiersin.org/articles/10.3389/fenrg.2017.0001...
Using the exact technique that crustaceans use during biomineralisation will be very, very expensive at scale due to the enzymes needed. Current techniques involve using high-pH hydroxide solutions to perform the reactions. Carbon sequestration by pumping concentrated carbon dioxide gas underground would naturally use the high-pH geological environment to run this reaction over time.
There are still unanswered questions about pumping CO2 gas underground with regards to leakage - nevermind the fact that when it's pumped into old oil wells, it has the side effect of forcing out more oil which is recovered, sold and burned.
Converting CO2 to a solid, stable form like CaCO3 then storing the solids is a nice sequestration option, but like a lot of things in this space, the economics are holding it back more than the technology is.
Is it not more the missing political will? (and yes, they are related as politics always seeks/ caters to big corps to get their buy-in)
In 2008 when the financial system felt some distress, the German finance minister provided 400bn euros over a weekend to Deutsche bank and others. It took politics 2 fregging days to unlock that amount of resources. And it was like no questions asked.
And we kept pumping that amount in there on a quarterly basis ever since.
I do not need to go into military spending.
So for me the earth ecosystem which needs to sustain is as a species is in as much of distress as the financial system was back then. It warrants the same sense of urgency and resource allocation.