TY - JOUR
T1 - A novel mechanistic modelling approach for microbial selection dynamics
T2 - Towards improved design and control of raceway reactors for purple bacteria
AU - Alloul, Abbas
AU - Moradvandi, Ali
AU - Puyol, Daniel
AU - Molina, Raúl
AU - Gardella, Giorgio
AU - Vlaeminck, Siegfried E.
AU - De Schutter, Bart
AU - Abraham, Edo
AU - Lindeboom, Ralph E.F.
AU - Weissbrodt, David G.
PY - 2023
Y1 - 2023
N2 - 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.
AB - 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.
KW - Bio-process modelling
KW - Physico-chemical process
KW - Process control
KW - Process design
KW - Resource recovery
UR - http://www.scopus.com/inward/record.url?scp=85174743150&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2023.129844
DO - 10.1016/j.biortech.2023.129844
M3 - Article
C2 - 37827201
AN - SCOPUS:85174743150
SN - 0960-8524
VL - 390
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 129844
ER -
