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A superstructure optimization approach for membrane separation - based water regeneration network synthesis with detailed nonlinear mechanistic reverse osmosis model / Cheng Seong Khor in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13444-13456 Titre : A superstructure optimization approach for membrane separation - based water regeneration network synthesis with detailed nonlinear mechanistic reverse osmosis model Type de document : texte imprimé Auteurs : Cheng Seong Khor, Auteur ; Dominic C. Y. Foo, Auteur ; Mahmoud M. El-Halwagi, Auteur Année de publication : 2012 Article en page(s) : pp. 13444-13456 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Modeling  Reverse  osmosis  Membrane  separation  Optimization  Superstructure Résumé : Scarcity of freshwater resources and increasingly stringent environmental regulations on industrial effluents have motivated the process industry to identify and develop various water recovery strategies. This work proposes the use of detailed model representation for water regeneration network synthesis, in which nonlinear mechanistic models of the regeneration units are embedded within an overall mixed-integer nonlinear programming (MINLP) optimization framework. The superstructure-based MINLP framework involves both continuous variables for water flow rates and contaminant concentrations and 0―1 variables for selection ofpiping interconnections. The nonlinear regeneration model produces a rigorous cost-based relation, instead of a "black box" model, that is incorporated within the overall MINLP representing a network of numerous water sources and water sinks. Hence, such an approach enables a simultaneous evaluation of both direct water reuse/recycle and regeneration-reuse/recycle opportunities. To demonstrate the proposed approach, an industrial case study is illustrated that incorporates a mechanistic model of reverse osmosis network (RON) for water regeneration for an operating refinery in Malaysia. The results indicate a potential of 58% savings in freshwater use. The capital investment for the water regeneration network is reported as $8,960,000 with a payback period of 2.1 years, thus providing economic support to pursue the RON retrofit option. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267503 [article] A superstructure optimization approach for membrane separation - based water regeneration network synthesis with detailed nonlinear mechanistic reverse osmosis model [texte imprimé] / Cheng Seong Khor, Auteur ; Dominic C. Y. Foo, Auteur ; Mahmoud M. El-Halwagi, Auteur . - 2012 . - pp. 13444-13456. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13444-13456 Mots-clés : Modeling  Reverse  osmosis  Membrane  separation  Optimization  Superstructure Résumé : Scarcity of freshwater resources and increasingly stringent environmental regulations on industrial effluents have motivated the process industry to identify and develop various water recovery strategies. This work proposes the use of detailed model representation for water regeneration network synthesis, in which nonlinear mechanistic models of the regeneration units are embedded within an overall mixed-integer nonlinear programming (MINLP) optimization framework. The superstructure-based MINLP framework involves both continuous variables for water flow rates and contaminant concentrations and 0―1 variables for selection ofpiping interconnections. The nonlinear regeneration model produces a rigorous cost-based relation, instead of a "black box" model, that is incorporated within the overall MINLP representing a network of numerous water sources and water sinks. Hence, such an approach enables a simultaneous evaluation of both direct water reuse/recycle and regeneration-reuse/recycle opportunities. To demonstrate the proposed approach, an industrial case study is illustrated that incorporates a mechanistic model of reverse osmosis network (RON) for water regeneration for an operating refinery in Malaysia. The results indicate a potential of 58% savings in freshwater use. The capital investment for the water regeneration network is reported as $8,960,000 with a payback period of 2.1 years, thus providing economic support to pursue the RON retrofit option. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267503