GAS EXCHANGE WITH MASS CULTURES OF ALGAE. II. RELIABILITY OF A PHOTOSYNTHETIC GAS EXCHANGER.
Comparisons of oxygen production and carbon dioxide absorption by an algal gas exchanger were made over a 3-month period. The data do not represent a continuous test, but they do represent results obtained when identical light intensities, CO(2) supply rates, and dilution rates with fresh culture medium had been used for more than 1 day. Steady-state conditions were thus assured, and the agreement in the data was excellent. Under the same experimental conditions, the unit was operated continuously for a 5-day period, and the daily variability in this test was less than in the results obtained from month to month. The variation between the average O(2) production during the 5-day test and the average of the tests over a several-month period was less than 3%. It is concluded, therefore, that the reliability of the algae in producing oxygen is sufficient to warrant their use in either submarine or space ship use.
D002245:Carbon Dioxide; D003470:Culture Media; D018504:Ecological Systems, Closed; D004463:Ecology; D056890:Eukaryota; D008027:Light; D008660:Metabolism; D010100:Oxygen; D010788:Photosynthesis; D015203:Reproducibility of Results; D012106:Research
D003470:Culture Media; D002245:Carbon Dioxide; D010100:Oxygen
ALGAE; CARBON DIOXIDE; EXPERIMENTAL LAB STUDY; METABOLISM; OXYGEN; PHOTOSYNTHESIS; SEALED CABIN ECOLOGY