“Then it is pumped into a greenhouse to grow bigger vegetables”
They say that like it’s a BAD thing!
Ok, so the concentration of CO2 in the atmosphere is too high and going to cause all sorts of bad things.
So we capture it from the air and pump it into a greenhouse where it RAISES the concentration of CO2 and makes plants grow bigger, faster, and stronger.
Wouldn’t it be far easier and cheaper to just let the plants enjoy the very slightly elevated CO2 concentration in the atmosphere in the first place without all the complexity and expense of the proposed process?
The irony of the proposed process is it would take LOTS of electricity made from fossil fuels to run their CO2 capture and concentration process. I think something called “The Second Law of Thermodynamics” is in play here.