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Physarum polycephalum: towards a biological controller.

Benjamin Taylor1, Andrew Adamatzky2, John Greenman3

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Summary
This summary is machine-generated.

Physarum polycephalum, a slime mould, did not generate significant power in microbial fuel cells (MFCs) anodes. However, introducing it to MFC cathodes resulted in a notable increase in power output.

Keywords:
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Area of Science:

  • Bio-electrochemical systems
  • Microbial fuel cells (MFCs)
  • Artificial life systems

Background:

  • Microbial fuel cells (MFCs) convert microbial metabolism into energy.
  • Physarum polycephalum, a slime mould, exhibits unique computational properties.
  • P. polycephalum is motile, photosensitive, and consumes oxygen.

Purpose of the Study:

  • To investigate the potential of Physarum polycephalum in microbial fuel cells.
  • To evaluate P. polycephalum's role in energy generation within MFCs.
  • To explore P. polycephalum as a biological component in artificial life systems.

Main Methods:

  • Inoculation of P. polycephalum in the anode of MFCs.
  • Inoculation of P. polycephalum in the cathode of MFCs.
  • Measurement of power output in both anode and cathode configurations.

Main Results:

  • P. polycephalum did not generate significant power when placed in the anode.
  • A statistically significant difference in power output was observed when P. polycephalum was introduced to the cathode.
  • The slime mould's placement critically affected MFC performance.

Conclusions:

  • P. polycephalum is not suitable as a primary power-generating organism in MFC anodes.
  • The cathode of MFCs is a more effective environment for P. polycephalum to influence power generation.
  • P. polycephalum shows potential for modulating MFC performance, particularly in cathode applications.