Reference:
A. Alloul,
A. Moradvandi,
D. Puyol,
R. Molina,
G. Gardella,
S.E. Vlaeminck,
B. De Schutter,
E. Abraham,
R.E.F. Lindeboom, and
D.G. Weissbrodt,
"A novel mechanistic modelling approach for microbial selection
dynamics: Towards improved design and control of raceway reactors for
purple bacteria," Bioresource Technology, vol. 390, p.
129844, Dec. 2023.
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.