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Recycling of trace elements required for humans in CELSS
1Space Systems Division, Hitachi Ltd., Tokyo, Japan.
Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|November 1, 1994
Summary
Recycling essential trace elements is crucial for human sustenance in Controlled Ecological Life Support Systems (CELSS). This study explores plant-based nutrient pathways for trace element intake and management within these systems.
Area of Science:
- Space exploration
- Life support systems
- Environmental science
Background:
- Human sustenance requires complete nutrient recycling within Controlled Ecological Life Support Systems (CELSS).
- Essential elements are categorized into major, semi-major, and trace elements.
- Trace elements are increasingly recognized for their importance due to health and environmental factors.
Purpose of the Study:
- To review the requirements for trace elements in human nutrition within CELSS.
- To explore potential pathways for trace element absorption and transfer in a closed-loop system.
- To discuss the management and recycling strategies for trace elements in CELSS.
Main Methods:
- Review of biogeochemical history and human/plant physiology.
- Analysis of potential trace element uptake routes via water and atmosphere.
- Discussion of trace element management within CELSS.
Main Results:
- Identified key trace elements (Fe, Zn, Cu, Se, etc.) essential for human health.
- Proposed that plants can absorb dissolved trace elements for human consumption.
- Considered atmospheric absorption as a potential trace element source.
- Highlighted the need for trace element management in CELSS.
Conclusions:
- Trace element recycling is vital for sustainable human life support in CELSS.
- Plant-mediated nutrient pathways offer a viable route for trace element intake.
- Effective management strategies are necessary to ensure adequate trace element levels in closed ecological systems.