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2013-03-26 - Colloque/Abstract - Anglais - 1 page(s)

Benavides Castro Micaela , Massart Amaury , Hantson Anne-Lise , Vande Wouwer Alain , Van Impe Jan, "Parameter Identification of Droop Model" in 32th Benelux Meeting on Systems and Control, Houffalize, Belgium, 2013

  • Codes CREF : Sciences de l'ingénieur (DI2000), Biotechnologie (DI3800), Automatique (DI2530)
  • Unités de recherche UMONS : Automatique (F107), Chimie et Biochimie appliquées (F504)
  • Instituts UMONS : Institut des Biosciences (Biosciences)
  • Centres UMONS : Biosys (BIOSYS)
Texte intégral :

Abstract(s) :

(Anglais) Droop model is a well-established mathematical model for describing the effect of nutrient limitation on the growth of micro-algae. The main feature of this model is the consideration of two mechanisms: (a) substrate uptake so as to build an internal pool, following a Monod kinetic law and (b) biomass growth, based on the consumption of the nutrient stored in the internal pool, following a so-called Droop kinetic law, which involves a minimum internal quota. This model has demonstrated its predictive capacity in several experimental studies. However, the identification of the model parameters is a delicate task, which requires informative experimental data. The purpose of this study is to estimate the parameters of a Droop model for the marine micro-algae Dunaliella tertiolecta, and to investigate the use of conventional on-line measurement probes for the extracellular nitrogen concentration. Droop model considers the substrate (s) (inorganic nitrogen), the internal quota (qn) and the biomass (x) in terms of organic carbon.