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Analysis of an algae-based CELSS. Part 2: options and weight analysis
M T Holtzapple1, F E Little, W M Moses
1Texas A&M University, College Station 77843-3118, USA.
Acta Astronautica
|April 1, 1989
Summary
Regenerative bioreactors using algae can replace food stores on long space missions. Algal food production offers a sustainable alternative to resupply, enhancing life support system closure.
Area of Science:
- Space exploration
- Bioregenerative life support systems
- Astrobiology
Background:
- Evaluating life support components for closed systems is crucial for long-duration space missions.
- Algal bioreactors offer potential for in-situ food production and resource regeneration.
Purpose of the Study:
- Assess life support components for an idealized closed system incorporating an algal reactor.
- Determine the feasibility of algae-based food production as a replacement for stored supplies.
Main Methods:
- Conducted weight-based trade studies to calculate the "break-even" time for replacing food stores with a bioreactor.
- Analyzed the dependency of life support gas closure on carbon dioxide reduction chemistry.
Main Results:
- Identified the critical role of carbon dioxide reduction chemistry in achieving life support gas closure (oxygen recovery).
- Demonstrated that algae-based food production can be a viable alternative to resupply for extended missions.
Conclusions:
- Algal bioreactors present an attractive solution for food production in closed life support systems.
- Achieving full closure of life support gases is contingent upon effective carbon dioxide reduction strategies.