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A novel mechanistic modelling approach for microbial selection dynamics

Towards improved design and control of raceway reactors for purple bacteria

Journal Article (2023)
Authors

Abbas Alloul (TU Delft - BT/Environmental Biotechnology, Universiteit Antwerpen)

Ali Moradvandi (TU Delft - Sanitary Engineering, TU Delft - Delft Center for Systems and Control)

Daniel Puyol (Universidad Rey Juan Carlos)

Raúl Molina (Universidad Rey Juan Carlos)

G. Gardella (TU Delft - Sanitary Engineering)

S. E. Vlaeminck (Universiteit Antwerpen)

BHK De Schutter (TU Delft - Delft Center for Systems and Control)

Edo Abraham (TU Delft - Water Resources)

Ralph E.F. Lindeboom (TU Delft - Laboratory Water Management)

David Gregory Weissbrodt (Norwegian University of Science and Technology (NTNU), TU Delft - BT/Environmental Biotechnology)

Research Group
Sanitary Engineering
Copyright
© 2023 A. Alloul, A. Moradvandi, Daniel Puyol, Raúl Molina, G. Gardella, Siegfried E. Vlaeminck, B.H.K. De Schutter, E. Abraham, R.E.F. Lindeboom, D.G. Weissbrodt
To reference this document use:
https://doi.org/10.1016/j.biortech.2023.129844
More Info
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Publication Year
2023
Language
English
Copyright
© 2023 A. Alloul, A. Moradvandi, Daniel Puyol, Raúl Molina, G. Gardella, Siegfried E. Vlaeminck, B.H.K. De Schutter, E. Abraham, R.E.F. Lindeboom, D.G. Weissbrodt
Research Group
Sanitary Engineering
Volume number
390
DOI:
https://doi.org/10.1016/j.biortech.2023.129844
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Abstract

Purple phototrophic bacteria (PPB) show an underexplored potential for resource recovery from wastewater. Raceway reactors offer a more affordable full-scale solution on wastewater and enable useful additional aerobic processes. Current mathematical models of PPB systems provide useful mechanistic insights, but do not represent the full metabolic versatility of PPB and thus require further advancement to simulate the process for technology development and control. In this study, a new modelling approach for PPB that integrates the photoheterotrophic, and both anaerobic and aerobic chemoheterotrophic metabolic pathways through an empirical parallel metabolic growth constant was proposed. It aimed the modelling of microbial selection dynamics in competition with aerobic and anaerobic microbial community under different operational scenarios. A sensitivity analysis was carried out to identify the most influential parameters within the model and calibrate them based on experimental data. Process perturbation scenarios were simulated, which showed a good performance of the model.