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Online identification and control of pH in a neutralization system / Salih Obut in Industrial & engineering chemistry research, Vol. 47 N° 13 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N° 13 (Juillet 2008) . - p. 4394–4404 Titre : Online identification and control of pH in a neutralization system Type de document : texte imprimé Auteurs : Salih Obut, Auteur ; Canan Özgen, Auteur Année de publication : 2008 Article en page(s) : p. 4394–4404 Note générale : Bibliogr. p. 4404 Langues : Anglais (eng) Mots-clés : PH  control;  Wastewater  --  neutralization  system;  Online  identification  technique Résumé : pH control of a neutralization system for wastewater, where the input waste stream has variable properties in terms of acid concentration and flow rate, is investigated with different control algorithms utilizing an online identification technique. Performances of the designed controllers (model predictive (MPC), fuzzy logic (FLC), and conventional PI controller) are tested and compared mainly for disturbance rejection, set-point tracking, and robustness issues theoretically and experimentally on a laboratory-scale pH neutralization system. Additional experiments are done with original wastewater samples taken from an electronic-circuits manufacturing plant. All controllers’ performances are found to be close, while adaptive MPC can be considered better compared to others due its constraint handling capabilities and FLC can be preferred because it can be used without an identification step. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie070492p [article] Online identification and control of pH in a neutralization system [texte imprimé] / Salih Obut, Auteur ; Canan Özgen, Auteur . - 2008 . - p. 4394–4404. Bibliogr. p. 4404 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 13 (Juillet 2008) . - p. 4394–4404 Mots-clés : PH  control;  Wastewater  --  neutralization  system;  Online  identification  technique Résumé : pH control of a neutralization system for wastewater, where the input waste stream has variable properties in terms of acid concentration and flow rate, is investigated with different control algorithms utilizing an online identification technique. Performances of the designed controllers (model predictive (MPC), fuzzy logic (FLC), and conventional PI controller) are tested and compared mainly for disturbance rejection, set-point tracking, and robustness issues theoretically and experimentally on a laboratory-scale pH neutralization system. Additional experiments are done with original wastewater samples taken from an electronic-circuits manufacturing plant. All controllers’ performances are found to be close, while adaptive MPC can be considered better compared to others due its constraint handling capabilities and FLC can be preferred because it can be used without an identification step. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie070492p