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NASA is recycling 98 percent of astronaut pee and sweat on the ISS into drinkable water
(www.engadget.com)
this post was submitted on 26 Jun 2023
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Hmm... I had one question from the get go. But it was not answered by the article. Namely what happens the remaining 2%? They say there's a chance to recovery it in the future but not what they do with it currently.
Also, nice stillsuit reference.
I think this has to do with the fact that water soluble wastes are harder to remove from water but easier to concentrate. I'm no chemistry expert but I think that's why
But, given that's the case, what do they do with the wastes? Is it shot out into space or brought back to earth?
Most trash is burnt in atmosphere when the one-way supply ships are disposed (de-orbited in a controlled way). Some waste samples are probably brought down for examination.