Gas Recycling: A Bioregenerative Life Support Systemby David B. Kramer, Veterans Administration Medical, Hospital, United States,
Abstract: The prospect of a lunar or earth-orbiting space station raises the question of life support for long periods of time with little or no support from earth. The cost of lifting supplies out of the earth's gravitational field is extremely high, and transport of life-sustaining gases may be prohibitive. One possible solution is to recycle gases from astronaut living quarters through a greenhouse containing various plants. The by-products of photosynthesis and respiration are complementary, and, in addition, the plants could prove to be a valuable resource for the station's inhabitants beyond gas recycling. The process of gas recycling is discussed in this paper.
Subject Headings: Recycling | Space life support systems | Space stations | Dissolved gases | Moon | Natural gas | Biological processes
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