NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Operation of an experimental algal gas exchanger for use in a CELSSConcepts of a CELSS anticipate the use of photosynthetic organisms for air revitalization. The rates of production and uptake of carbon dioxide and oxygen between the crew and the photosynthetic organisms are mismatched. An algal system used for gas exchange only will have the difficulty of an accumulation or depletion of these gases beyond physiologically tolerable limits. The results of a study designed to test the feasibility of using environmental manipulations to maintain physiologically appropriate atmospheres for algae (Chlorella pyrenoidosa) and mice (Mus musculus strain DW/J) in a gas-closed system is reported. Specifically, the atmosphere behavior of this system with Chlorella grown on nitrate or urea and at different light intensities and optical densities is considered. Manipulation of both the photosynthetic rate and the assimilatory quotient of the alga has been found to reduce the mismatch of gas requirements and allow operation of the system in a gas-stable manner.
Document ID
19880029838
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Smernoff, David T.
(New Hampshire, University Durham, United States)
Wharton, Robert A., Jr.
(NASA Ames Research Center Moffett Field, CA, United States)
Averner, Maurice M.
(NASA Headquarters Washington, DC United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Advances in Space Research
Volume: 7
Issue: 4, 19
ISSN: 0273-1177
Subject Category
Man/System Technology And Life Support
Accession Number
88A17065
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available