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I’ll note that this is a tiny and incredibly expensive part of what needs to happen
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Would that be done through mineralizing the carbon that’s dissolved in the water? I remember hearing about some mineral you could spread in the water that would react with the carbon. I wonder what it would take to produce and spread that at scale with a low re-emission rate.
There is discussion around enhanced rock weathering, but none of it is a proved technology at this point, even at pilot scale, in the way that direct air capture is.
That’s a bingo!
alternative link (also bypasses paywall): https://archive.ph/h0KNS
Interesting, but there’s no mention in the article of the $/ton CO2 they will pay that I could see.
Presumably it will have to be close to the market (say $100 $/ton today?).
If they go lower there will be no uptake, if they go much higher they will burn through the $3.5B and only achieve a short blip in the market for no real long term benefit.
But I imagine $3.5B used carefully might have some interesting effects.
Edit: I’m not sure $3.5B is the relevant number (but the only one quoted in the article).
So having trees will earn you money? /s
