Daily Archives: July 9, 2011

Drink Your Own Pee In Outer Space One Day

In 2008, Space Station Gets Pee-Recycling System.  Wired.

Fast forward to 2011.  NASA’s Stillsuit: Atlantis Crew to Test Pee-Recycling Bag.  Wired.

Whoa!  Drink your own pee?  Is that what’s in the bag for adventuresome astronauts?  It has gone from a machine process, to a sugary fluid osmotic process.

Before.

The machine will use a distillation process that compensates for the absence of gravity to remove impurities from urine. Then the water will be combined with fluid from showers, shaving, tooth brushing and hand washing, as well as perspiration and water vapor that collects inside the astronauts’ space suits.

All this reclaimed water will go through a processing system to extract free gas and solid materials such as hair and lint. Afterward, the system will remove any remaining contaminants through a high-temperature chemical reaction.

Now.

NASA’s recycler will use a sugary solution injected into a semi-permeable inner bag, which is nested inside an outer bag. Dirty fluid that’s pumped into the outer bag will slowly pass through the inner bag and into the sugary solution, leaving behind its contaminants. On Earth, the double-sack  system makes about a liter of sports drink-like fluid in four to six  hours.

Thirst quenching, mouth-watering delicious?!?  All the sports drink manufacturers are now green with envy for sure.  Check out the all the images here.

But will that mellow yellow beverage be served at body temp, or on the rocks?  One Japanese television crew member who tried it said it tasted like Capri Sun.

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