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by ianburrell 1073 days ago
Weathering rocks to absorb carbon makes a lot of sense. It doesn't require any new technology. The equipment can be powered by electricity and only run when there is excess power available. It should scale well, but does need large scale to make a difference.
1 comments
pfdietz 1073 days ago
It also can make sense to add limestone (or other carbonates) to the ocean. As long as you don't make the ocean too alkaline, you get the following net reaction:

CaCO3 + CO2 + H2O --> Ca(+2) + 2 HCO3(-1)

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ianburrell 1073 days ago
Seeing as climate change is making the ocean acidic, making it alkaline would be a good thing.
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