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eppur_se_muova

(41,414 posts)
2. So they plan to resell it ... sounds like a closed loop.
Fri Jun 10, 2016, 05:10 PM
Jun 2016

Suck it out of the air, sell it, use it, and watch it go back into the atmosphere again.

Since it takes alkali to capture the CO2, this won't help much ... alkali is made by brine electrolysis, or by decomposing CaCO3 (limestone, shells, etc.) which produces ... CO2. Brine electrolysis also produces chlorine or chlorine oxoacids, and there's only so much market for them. You can't have a net removal of CO2 from the air without a net consumption of alkali, which is impossible with CaCO3, or a net production of Cl2 etc.

I've learned to be skeptical of any claim to remove CO2 using "alkali" or "base". People never seem to understand that you need a LOT of base, and making it takes a LOT of energy.

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