Also if you had enough power (solar or possibly nuclear) you could use the captured gases directly for slightly inefficient propulsion by heating them NERVA sty

Also if you had enough power (solar or possibly nuclear) you could use the captured gases directly for slightly inefficient propulsion by heating them NERVA style or accelerating them by a modifiedion engine. I remember some concepts for very low altitude satellites that compensate for drag by running a solar powered ion ramjet. :)