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Scientist Discover How to Convert CO2 into Powder That Can Be Stored for Decades
(www.scientificamerican.com)
this post was submitted on 07 Jan 2024
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All the CO2 in the atmosphere weights on the order of 10^15 kg. That's roughly the size of a lake like the Titicaca lake. I did not do all the calculation as sodium formate is heavier than water but part of its weight is from added atoms (sodium and hydrogen) but that gives a scale of the room it would take. More likely, every country would have a few storage facilities, probably in closed down mines.