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Robust control of volatile fatty acids in anaerobic digestion processes / Hugo O. Mendez-Acosta in Industrial & engineering chemistry research, Vol. 47 N°20 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7715-7720 Titre : Robust control of volatile fatty acids in anaerobic digestion processes Type de document : texte imprimé Auteurs : Hugo O. Mendez-Acosta, Auteur ; Bernardo Palacios-Ruiz, Auteur ; Victor Alcaraz-Gonzalez, Auteur ; Jean-Philippe Steyer, Auteur Année de publication : 2008 Article en page(s) : P. 7715-7720 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : volatile  fatty  acids  (VFA)  Anaerobic  digestion  processes Résumé : This paper is focused on the experimental implementation of a robust control scheme for the regulation of volatile fatty acids (VFA) in continuous anaerobic digestion processes. The robust scheme is made of an output feedback control, and an extended Luenberger observer is used to estimate the uncertain terms of the process (i.e., influent concentration and process kinetics). The control scheme is implemented in a pilot plant up-flow fixed-bed reactor that is treating industrial wine distillery wastewater. The performance of the robust scheme is tested over a period of 36 days, under different set-point values and several uncertain scenarios, including model mismatch, badly known parameters, and load disturbances. Experimental results show that the VFA concentration can be effectively regulated over a wide range of operating conditions. In addition, it is shown that the control scheme has a structure that improves its performance in the presence of noisy measurements and control input saturations. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800256e [article] Robust control of volatile fatty acids in anaerobic digestion processes [texte imprimé] / Hugo O. Mendez-Acosta, Auteur ; Bernardo Palacios-Ruiz, Auteur ; Victor Alcaraz-Gonzalez, Auteur ; Jean-Philippe Steyer, Auteur . - 2008 . - P. 7715-7720. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°20 (Octobre 2008) . - P. 7715-7720 Mots-clés : volatile  fatty  acids  (VFA)  Anaerobic  digestion  processes Résumé : This paper is focused on the experimental implementation of a robust control scheme for the regulation of volatile fatty acids (VFA) in continuous anaerobic digestion processes. The robust scheme is made of an output feedback control, and an extended Luenberger observer is used to estimate the uncertain terms of the process (i.e., influent concentration and process kinetics). The control scheme is implemented in a pilot plant up-flow fixed-bed reactor that is treating industrial wine distillery wastewater. The performance of the robust scheme is tested over a period of 36 days, under different set-point values and several uncertain scenarios, including model mismatch, badly known parameters, and load disturbances. Experimental results show that the VFA concentration can be effectively regulated over a wide range of operating conditions. In addition, it is shown that the control scheme has a structure that improves its performance in the presence of noisy measurements and control input saturations. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800256e