Yes I understand the argument, but you're still not posting actual numbers for any specific materials required by these particular technologies. I could just as well mention the immense materials required for grid-scale batteries, but that doesn't mean they're necessarily infeasible; it all depends on which materials we use.
Before you say "industrial chemistry is different" I'll note that the MIT tech is actually quite similar to a battery. Aside from the CO2 it doesn't have a flow of chemicals that turn into waste; I've seen proposals like that too and this is different.
The Princeton method is new in the lab but the MIT project started a company that has been working on commercializing for five years now. So far they've won an XPrize, gotten investment from the Gates fund, and started collaborating with an aluminum company.
Before you say "industrial chemistry is different" I'll note that the MIT tech is actually quite similar to a battery. Aside from the CO2 it doesn't have a flow of chemicals that turn into waste; I've seen proposals like that too and this is different.
The Princeton method is new in the lab but the MIT project started a company that has been working on commercializing for five years now. So far they've won an XPrize, gotten investment from the Gates fund, and started collaborating with an aluminum company.
https://news.mit.edu/2022/cracking-carbon-removal-challenge-...
https://verdox.com/