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Related Experiment Video

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ABACO-2: a comprehensive model for microalgae-bacteria consortia validated outdoor at pilot-scale.

Rebecca Nordio1, Enrique Rodríguez-Miranda2, Francesca Casagli3

  • 1Department of Chemical Engineering, Universidad de Almería, E04120 Almería, Spain; CIESOL Solar Energy Research Centre, Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain.

Water Research
|November 20, 2023
PubMed
Summary

The ABACO-2 model accurately predicts microalgae-bacteria consortia dynamics in wastewater treatment. This enhanced model simplifies parameter identification and improves biomass and nutrient predictions for sustainable wastewater management.

Keywords:
Microalgaemodelingwastewater

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Area of Science:

  • Environmental Microbiology
  • Biochemical Engineering
  • Wastewater Treatment Technologies

Background:

  • Microalgae-bacteria consortia are crucial for efficient wastewater treatment.
  • Accurate modeling is needed to optimize these systems.
  • Existing models require further refinement for practical application.

Purpose of the Study:

  • To present an enhanced microalgae-bacteria modeling tool, ABACO-2.
  • To improve the prediction accuracy of biomass and nutrient dynamics.
  • To simplify parameter identification for practical use.

Main Methods:

  • Developed ABACO-2 by enhancing the original ABACO model.
  • Incorporated new equations for nutrient yields, oxygen balance, and decay.
  • Validated the model using data from an 80 m² outdoor pilot-scale raceway reactor over 206 days.

Main Results:

  • ABACO-2 demonstrated improved accuracy in predicting biomass concentration (microalgae, heterotrophic, and nitrifying bacteria).
  • The model successfully forecasted nutrient evolution and population dynamics.
  • Reduced calibrated parameters simplified the model's parameter identification process.

Conclusions:

  • ABACO-2 provides a robust and accurate tool for characterizing microalgae-bacteria consortia dynamics.
  • The model aids in optimizing microalgae-based wastewater treatment processes.
  • Mathematical modeling is vital for the sustainable development of the wastewater treatment industry.