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Related Concept Videos

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A new model to analyze the temperature effect on the microalgae performance at large scale raceway reactors.

Enrique Rodríguez-Miranda1, Francisco G Acién2, Jose L Guzmán3

  • 1Department of Mechanical and Industrial Engineering, University of Brescia, Brescia, Italy.

Biotechnology and Bioengineering
|November 3, 2020
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Summary

A simplified temperature model for microalgae raceway reactors was developed. Results show only temperature-tolerant strains are suitable for year-round large-scale production without added temperature control.

Keywords:
biotechnologyenergy balancemicroalgaeraceway reactortemperature model

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Area of Science:

  • Biotechnology
  • Environmental Engineering
  • Algal Biotechnology

Background:

  • Microalgae cultivation in outdoor raceway reactors is sensitive to temperature fluctuations.
  • Accurate temperature modeling is crucial for optimizing large-scale microalgae production.

Purpose of the Study:

  • To develop and validate a simplified temperature model for microalgae raceway reactors.
  • To analyze the impact of temperature on microalgae culture performance under various conditions.
  • To identify microalgae strains suitable for year-round cultivation.

Main Methods:

  • Development of a simplified temperature model incorporating radiation absorption and evaporative heat loss.
  • Calibration of model parameters using genetic algorithms.
  • Validation of the model with over 50 days of experimental data across diverse weather conditions.

Main Results:

  • The model accurately predicts microalgae culture temperature based on reactor design and environmental factors.
  • The temperature index was computed to assess annual performance variations for different microalgae strains.
  • Model results indicate that only strains with broad temperature tolerance are viable for continuous large-scale outdoor cultivation.

Conclusions:

  • The developed temperature model is a valuable tool for assessing large-scale microalgae production.
  • Microalgae strain selection must prioritize temperature tolerance for efficient year-round cultivation in raceway reactors.
  • Minimizing temperature-related performance losses is key to successful industrial microalgae biotechnology.