INVESTIGADORES
SCENNA Nicolas Jose
congresos y reuniones científicas
Título:
Modeling of anaerobic bioreactors oriented to optimization. Solutions for IPDAE systems
Autor/es:
MAUREN FUENTES; MIGUEL C. MUSSATI; NICOLÁS SCENNA; PÍO AGUIRRE
Lugar:
Lyon, Francia
Reunión:
Congreso; 18th European Symposium on Computer Aided Process Engineering ESCAPE 18; 2008
Institución organizadora:
Bertrand Braunschweig and Xavier Joulia (Editors)
Resumen:
A global model of an anaerobic fluidized bed reactor (Fuentes et al., 2007d) is used to
optimize different loading strategies and investigate some aspects on process control to
drive the system towards optimal performance under disturbance scenarios. The gOPT
tool of gPROMS (Process System Enterprise Ltd.) was used to perform the dynamic
optimization calculations. Some aspects on DAE and IPDAE systems formulations for
optimization purposes are exposed. Most of the computational work deals with
piecewise constant functions. A case study related to a multispecies biofilm reactor for
wastewater treatment is analyzed. Results are based on different dynamic optimization
formulations such as maximization of biomass concentration inside the bioreactor and
biogas production. Operating disturbances such as increased organic loading rate (feed
flow rate) during the start-up period, and changes in the cations concentration, result in
strong numerical discontinuities that were included in the simulation schedules.
Optimization of bioreactor performance in multispecies biofilm requires formulating
path constraints for system pH in order to achieve high contaminant removal
efficiencies.