[Lalabadie]

Air filtration is one of the hardest things do deal with in space.

I don't know what solvents would do, but I remember that astronauts' bone density loss in space means there are challenges around managing the significant amount of calcium captured by the air scrubbers in the ISS.

[kakacik]

Do they literally sweat their bones away? I can imagine how it would work on molecular level via sweat / breathing, but I would expect >99% to be simply pissed and shat away.

[Lalabadie]

Edit: My bad, with calcium it's the liquid filters that deal with it, not the air scrubbers.

Quoting an ISS astronaut: Today's coffee is tomorrow's coffee.

[PaulHoule]

Wouldn't the calcium go out in your urine?

[schiffern]

Yes. It was the urine processor that had problems with excess calcium, not the air scrubber.

https://ttu-ir.tdl.org/server/api/core/bitstreams/f8ca865b-1...

[Lalabadie]

Appreciate the correction!