Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process

This paper focuses on the specific growth rate estimation problem in a <i>Polyhydroxybutyrate</i> bioplastic production process by industrial fermentation. The kinetics of the process are unknown and there are uncertainties in the model parameters and inputs. During the first hours of th...

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Autores principales: Jamilis Ricaldoni, Martín Ignacio, Garelli, Fabricio, Mozumder, Salatul Islam, Volcke, Eveline, De Battista, Hernán
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ingeniería
Bioplastics
Observer
Estimation
PHB
Software sensor
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136983
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136983
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Bioplastics
Observer
Estimation
PHB
Software sensor
spellingShingle Ingeniería
Bioplastics
Observer
Estimation
PHB
Software sensor
Jamilis Ricaldoni, Martín Ignacio
Garelli, Fabricio
Mozumder, Salatul Islam
Volcke, Eveline
De Battista, Hernán
Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process
topic_facet Ingeniería
Bioplastics
Observer
Estimation
PHB
Software sensor
description This paper focuses on the specific growth rate estimation problem in a <i>Polyhydroxybutyrate</i> bioplastic production process by industrial fermentation. The kinetics of the process are unknown and there are uncertainties in the model parameters and inputs. During the first hours of the growth phase of the process, biomass concentration can be measured online by an optical density sensor, but as cell density increases this method becomes ineffective and biomass measurement is lost. An asymptotic observer is developed to estimate the growth rate for the case without biomass measurement based on corrections made by a pH control loop. Furthermore, an exponential observer based on the biomass measurement is developed to estimate the growth rate during the first hours, which gives the initial condition to the asymptotic observer. Error bounds and robustness to uncertainties in the models and in the inputs are found. The estimation is independent of the kinetic models of the microorganism. The characteristic features of the observer are illustrated by numerical simulations and validated by experimental results.
format Articulo
Articulo
author Jamilis Ricaldoni, Martín Ignacio
Garelli, Fabricio
Mozumder, Salatul Islam
Volcke, Eveline
De Battista, Hernán
author_facet Jamilis Ricaldoni, Martín Ignacio
Garelli, Fabricio
Mozumder, Salatul Islam
Volcke, Eveline
De Battista, Hernán
author_sort Jamilis Ricaldoni, Martín Ignacio
title Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process
title_short Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process
title_full Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process
title_fullStr Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process
title_full_unstemmed Specific growth rate observer for the growing phase of a <i>Polyhydroxybutyrate</i> production process
title_sort specific growth rate observer for the growing phase of a <i>polyhydroxybutyrate</i> production process
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/136983
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