NDLI: Algal culture studies for celss

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Algal culture studies for celss

Content Provider	NASA Technical Reports Server (NTRS)
Author	Radmer, R. Arnett, K. Gladue, R. Lieberman, D. Behrens, P. Cox, J.
Copyright Year	1987
Description	Microalgae are well-suited as a component of a Closed Environmental Life Support System (CELSS), since they can couple the closely related functions of food production and atmospheric regeneration. The objective was to provide a basis for predicting the response of CELSS algal cultures, and thus the food supply and air regeneration system, to changes in the culture parameters. Scenedesmus growth was measured as a function of light intensity, and the spectral dependence of light absorption by the algae as well as algal respiration in the light were determined as a function of cell concentration. These results were used to test and confirm a mathematical model that describes the productivity of an algal culture in terms of the competing processes of photosynthesis and respiration. The relationship of algal productivity to cell concentration was determined at different carbon dioxide concentrations, temperatures, and light intensities. The maximum productivity achieved by an air-grown culture was found to be within 10% of the computed maximum productivity, indicating that CO2 was very efficiently removed from the gas stream by the algal culture. Measurements of biomass productivity as a function of cell concentration at different light intensities indicated that both the productivity and efficiency of light utilization were greater at higher light intensities.
File Size	1985511
Page Count	42
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870017076
Archival Resource Key	ark:/13960/t6d26td3w
Language	English
Publisher Date	1987-02-01
Access Restriction	Open
Subject Keyword	Man/system Technology And Life Support Productivity Luminous Intensity Algae Closed Ecological Systems Spacecraft Environments Mathematical Models Culture Techniques Biomass Respiration Photosynthesis Oxygen Production Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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