3 ms·
Carbon filter. Though I am confused. How can a passive filter remove CO2? Don't you need to add energy and use some sort of chemical reaction?
by FooBarWidget 4y ago
Carbon filter.
Though I am confused. How can a passive filter remove CO2? Don't you need to add energy and use some sort of chemical reaction?
- magicalhippo 4y agoCertain compounds can react with the CO2 in air passively, eg sodium hydroxide[1]. AFAIK you're right that energy has to be put into creating those compounds, tho that can be provided by the sun. But yeah, overall a quite silly idea, like the solar roadway[2] type proposals. [1]: https://en.wikipedia.org/wiki/Sodium_hydroxide https://en.wikipedia.org/wiki/Sodium_hydroxide [2]: https://en.wikipedia.org/wiki/Solar_Roadways https://en.wikipedia.org/wiki/Solar_Roadways