Jérome Harmand - Academia.edu (original) (raw)
Papers by Jérome Harmand
9th IFAC Symposium on Nonlinear Control Systems, 2013, 2013
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In this work, we study a model of the chemostat where the species are present in two forms, isola... more In this work, we study a model of the chemostat where the species are present in two forms, isolated bacteria and under an aggregated form like attached bacteria or bacteria in flocks. We show that our general model contains a lot of models which were previously considered in the literature. Assuming that flocculation and deflocculation dynamics are fast with respect
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We consider a Plug Flow bioreactor with axial dispersion in which occurs a simple growth reaction... more We consider a Plug Flow bioreactor with axial dispersion in which occurs a simple growth reaction (one biomass/one substrate). The dynamics of this bioreactor are described by a system of partial dierential equations. This work is devoted to the analysis of this system: we aim at proving uniform boundedness of solutions and describing their omega-limit sets. To ease this analysis,
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2007 46th IEEE Conference on Decision and Control, 2007
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Proceedings of the 17th IFAC World Congress, 2008, 2008
ABSTRACT
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Water Research, 2015
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Déchets, sciences et techniques, 2002
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2014 European Control Conference (ECC), 2014
ABSTRACT
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22nd Mediterranean Conference on Control and Automation, 2014
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Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301), 2002
Addresses the robust output feedback tracking problem for a biological wastewater treatment proce... more Addresses the robust output feedback tracking problem for a biological wastewater treatment process in the presence of input constraints and limited knowledge on the process parameters. The considered process is an anaerobic up-flow fixed bed biological reactor within a semi-industrial scale pilot plant for the treatment of industrial wine distillery wastewater. A mathematical model describing the dynamic behavior of the
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Proceedings of the 15th IFAC World Congress, 2002, 2002
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Focus on Biotechnology, 2003
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Journal of mathematical biology, Jan 14, 2014
We study how a particular spatial structure with a buffer impacts the number of equilibria and th... more We study how a particular spatial structure with a buffer impacts the number of equilibria and their stability in the chemostat model. We show that the occurrence of a buffer can allow a species to persist or on the opposite to go extinct, depending on the characteristics of the buffer. For non-monotonic response functions, we characterize the buffered configurations that make the chemostat dynamics globally asymptotically stable, while this is not possible with single, serial or parallel vessels of the same total volume and input flow. These results are illustrated with the Haldane kinetic function.
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BioEnergy Research, 2013
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Water science and technology : a journal of the International Association on Water Pollution Research, 2002
This paper describes the use of a Fourier Transform Infra-Red (FT-IR) spectrometer as an on-line ... more This paper describes the use of a Fourier Transform Infra-Red (FT-IR) spectrometer as an on-line sensor to measure Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Volatile Fatty Acids (VFA), and Partial and Total Alkalinity (PA and TA) in anaerobic digestion processes for the treatment of industrial wastewaters. Comparison with manual off-line analysis and with an on-line industrial TOC analyser and an on-line titrimetric sensor (for the measurements of VFA, TA and PA) are provided to demonstrate the interest of spectral analysis in the mid infra-red domain for the monitoring of anaerobic digestion processes. In order to further illustrate the advantages of using such a technique, on-line measurements recorded during an accident of the pH regulation in the input (pH in the reactor went above 11 and biomass activity stopped) are shown. They demonstrate that, if carefully performed, the calibration can be extended outside its range while being still compatible with requireme...
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Proceedings of the 45th IEEE Conference on Decision and Control, 2006
ABSTRACT
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9th IFAC Symposium on Nonlinear Control Systems, 2013, 2013
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In this work, we study a model of the chemostat where the species are present in two forms, isola... more In this work, we study a model of the chemostat where the species are present in two forms, isolated bacteria and under an aggregated form like attached bacteria or bacteria in flocks. We show that our general model contains a lot of models which were previously considered in the literature. Assuming that flocculation and deflocculation dynamics are fast with respect
Bookmarks Related papers MentionsView impact
We consider a Plug Flow bioreactor with axial dispersion in which occurs a simple growth reaction... more We consider a Plug Flow bioreactor with axial dispersion in which occurs a simple growth reaction (one biomass/one substrate). The dynamics of this bioreactor are described by a system of partial dierential equations. This work is devoted to the analysis of this system: we aim at proving uniform boundedness of solutions and describing their omega-limit sets. To ease this analysis,
Bookmarks Related papers MentionsView impact
2007 46th IEEE Conference on Decision and Control, 2007
Bookmarks Related papers MentionsView impact
Proceedings of the 17th IFAC World Congress, 2008, 2008
ABSTRACT
Bookmarks Related papers MentionsView impact
Water Research, 2015
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Déchets, sciences et techniques, 2002
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2014 European Control Conference (ECC), 2014
ABSTRACT
Bookmarks Related papers MentionsView impact
22nd Mediterranean Conference on Control and Automation, 2014
Bookmarks Related papers MentionsView impact
Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301), 2002
Addresses the robust output feedback tracking problem for a biological wastewater treatment proce... more Addresses the robust output feedback tracking problem for a biological wastewater treatment process in the presence of input constraints and limited knowledge on the process parameters. The considered process is an anaerobic up-flow fixed bed biological reactor within a semi-industrial scale pilot plant for the treatment of industrial wine distillery wastewater. A mathematical model describing the dynamic behavior of the
Bookmarks Related papers MentionsView impact
Proceedings of the 15th IFAC World Congress, 2002, 2002
Bookmarks Related papers MentionsView impact
Focus on Biotechnology, 2003
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Journal of mathematical biology, Jan 14, 2014
We study how a particular spatial structure with a buffer impacts the number of equilibria and th... more We study how a particular spatial structure with a buffer impacts the number of equilibria and their stability in the chemostat model. We show that the occurrence of a buffer can allow a species to persist or on the opposite to go extinct, depending on the characteristics of the buffer. For non-monotonic response functions, we characterize the buffered configurations that make the chemostat dynamics globally asymptotically stable, while this is not possible with single, serial or parallel vessels of the same total volume and input flow. These results are illustrated with the Haldane kinetic function.
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BioEnergy Research, 2013
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Water science and technology : a journal of the International Association on Water Pollution Research, 2002
This paper describes the use of a Fourier Transform Infra-Red (FT-IR) spectrometer as an on-line ... more This paper describes the use of a Fourier Transform Infra-Red (FT-IR) spectrometer as an on-line sensor to measure Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Volatile Fatty Acids (VFA), and Partial and Total Alkalinity (PA and TA) in anaerobic digestion processes for the treatment of industrial wastewaters. Comparison with manual off-line analysis and with an on-line industrial TOC analyser and an on-line titrimetric sensor (for the measurements of VFA, TA and PA) are provided to demonstrate the interest of spectral analysis in the mid infra-red domain for the monitoring of anaerobic digestion processes. In order to further illustrate the advantages of using such a technique, on-line measurements recorded during an accident of the pH regulation in the input (pH in the reactor went above 11 and biomass activity stopped) are shown. They demonstrate that, if carefully performed, the calibration can be extended outside its range while being still compatible with requireme...
Bookmarks Related papers MentionsView impact
Proceedings of the 45th IEEE Conference on Decision and Control, 2006
ABSTRACT
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