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Re:We need to take CO2 out of the sky by godelski on Tuesday October 05, 2021 @08:21PM (#28767563)
It's not a great idea, but you can pump air into lime water and it'll turn into calcium carbonate. Basaltic rock will also form calcium carbonate when CO2 infused water is passed through it.

I'm not sure these work at such small scales, but it could at least give you a starting point and a project. If you start a blog about these experiments I'd love to follow. Hard to know if your operating emissions would be offset by your sequestration. If anyone has better ideas I'd also like to know.

There could also be a monetary reason to do carbon capture at home. There can be a lot of CO2 buildup in homes and offices with poor ventilation (read: most).

Re:We need to take CO2 out of the sky by Syonyk on Tuesday October 05, 2021 @08:46PM (#28767737)
If I do any experimentation, it would be over at my normal blog. My operating emissions, if powered by my office, are zero incremental emissions - the system is overpaneled and there's no cost for extra production within the bounds of what it can do.