algae called spirulina -- a rich source of protein, antioxidants and nutrients
Looks like a "two-fer". You remove the carbon dioxide and you produce a food product in the bargain. This may cut down on the amount of food needed to support an astronaut in space.
The stuff grows prolifically. You should be able to keep up with food demand with it while not having to devote a lot of space to it.
I was thinking of an aquarium to grow fish that feed upon this stuff. You need a system for this in order for it to work well.
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