As an engineer I find both ideas very innovative. Nobody is desalinating their own water at home using waste heat. Oil wells are often located in an area where

As an engineer I find both ideas very innovative. Nobody is desalinating their own water at home using waste heat. Oil wells are often located in an area where it would make no sense to transport a bunch of water to desalinate (perhaps that's a good idea for sea-based wells though). I don't know enough about co2 extraction or electrolysis, only that those also don't sound like things people are likely to do at home.