Microbiological Life Support Systems: Photosynthesis Versus Chemosynthesis

  • Elizabeth C. B. Ammann
  • Lawrence L. Reed
Conference paper


Biochemical processes involving photosynthesis or chemosynthesis are potential candidates for the development of long-term, regenerative life support systems. This report compares the gas exchange characteristics of the two systems with respect to reliability, balance, weight, volume, and power requirements. The data is compiled from research at LMSC on the photosynthetic alga, Chlorella, and the chemosynthetic bacterium, Hydrogenomonas, as well as from the scientific literature. A brief and tentative engineering evaluation, based on research to date, is presented.


Oxygen Production Spectral Energy Distribution Life Support System Culture Unit Culture Apparatus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1967

Authors and Affiliations

  • Elizabeth C. B. Ammann
    • 1
  • Lawrence L. Reed
    • 1
  1. 1.Biological Sciences Research LaboratoriesLockheed Missiles & Space CompanyPalo AltoUSA

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