3 ms·
Navies have been removing CO2 from submarines for decades. I think they use sodium hydroxide. Manned space programs must remove CO2 air breathed by astronauts.
by hollerith 2y ago
Navies have been removing CO2 from submarines for decades. I think they use sodium hydroxide.
Manned space programs must remove CO2 air breathed by astronauts. They used lithium hydroxide for decades (including famously in Apollo 13) but ISTR the international space station has a more sophisticated process.
- gpm 2y agoThe ISS has a clever trick of using zeolite beds to absorb CO2 (a rock with pores that selectively hold onto CO2, and H2O but they dry the air first), and then venting it to space to get rid of the CO2 and recharge them.