this post was submitted on 19 Jun 2026
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[โ€“] asdfasdfasdf@lemmy.world 2 points 1 week ago (1 children)

I'd think you could build some machine to (re)harvest nitrogen from the air and it would eventually be free. But maybe that doesn't exist / super hard to do...

[โ€“] WoodScientist@lemmy.world 1 points 1 week ago

Or you could just run a pipe from the building's furnace or generator exhaust to the pig-gassing room and use the CO2 your facility is already generating.