How do space stations keep the air breathable?

Question

How do space stations keep the air breathable?

In: Engineering

Answer 1

The ISS, for example, has a number of systems to do this:

– It has a system which removes carbon dioxide and other contaminants from the air.
– They electrolyze water, splitting it apart, to generate oxygen (and hydrogen).
– Oxygen can also be manually supplied to the station via tanks.