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Related Experiment Videos

"SYMBIOSE" SYstem for Microgravity BIOregenerative Support of Experiments.

F Brechignac1, L Wolf

  • 1European Space Agency, ESTEC, Noordwijk, The Netherlands.

Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|November 1, 1994
PubMed
Summary

The SYMBIOSE program is developing a closed ecological system for microgravity research using Chlorella algae. This system aims to demonstrate the feasibility of closed-loop biotechnology for space exploration.

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Area of Science:

  • Space biology
  • Biotechnology
  • Ecology

Background:

  • ESA's SYMBIOSE program aims to create a closed ecological system for microgravity research.
  • This system integrates microalgal photosynthesis with a consumer compartment for a symbiotic Chlorella strain.

Purpose of the Study:

  • To establish a pilot model of a closed ecological system for space applications.
  • To investigate system dynamics and demonstrate the feasibility of closed-loop biotechnology.
  • To develop model-based control strategies for system stability.

Main Methods:

  • Utilizing a symbiotic strain of Chlorella (241.80, Gottingen) that excretes maltose.
  • Developing a technological concept for the artificial ecosystem.
  • Conducting preliminary studies on microalgal photosynthetic metabolism.

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Main Results:

  • A technological concept has been developed and is currently being integrated.
  • Preliminary work supports mathematical formalization and model-based control.
  • New photobioreactor design enhances light capture, gas transfer, and reduces shear stress.

Conclusions:

  • The SYMBIOSE program is progressing towards a functional closed ecological system for microgravity.
  • Further research will focus on mathematical modeling and control for stability.
  • The developed biotechnology shows promise for supporting scientific investigations in space.