Documents disponibles écrits par cet auteur

Optimization of energy and water consumption in corn-based ethanol plants / Elvis Ahmetovic in Industrial & engineering chemistry research, Vol. 49 N° 17 (Septembre 1, 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 7972–7982 Titre : Optimization of energy and water consumption in corn-based ethanol plants Type de document : texte imprimé Auteurs : Elvis Ahmetovic, Auteur ; Mariano Martin, Auteur ; Ignacio E. Grossmann, Auteur Année de publication : 2010 Article en page(s) : pp 7972–7982 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Optimization  Energy  Corn  based  ethanol. Résumé : In this paper we study the simultaneous energy and water consumption in the conceptual design of corn-based ethanol plants. A major goal is to reduce the freshwater consumption and wastewater discharge. We consider the corn-based ethanol plant reported in Karuppiah, et al. AICHE J. 2008, 54, 1499−1525. We review the major alternatives in the optimization of energy consumption and its impact in water consumption. Next, for each of the alternatives we synthesize an integrated process water network. This requires closing the loops for process and cooling water and steam, and implementing the proper treatment for the water streams. We show that minimizing energy consumption leads to process water networks with minimum water consumption. As a result, freshwater use is reduced to 1.54 galwater/galethanol, revealing that it is potentially possible to achieve levels of freshwater consumption that are significantly lower than the ones in current industrial operation and that wastewater discharged can also be reduced. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1000955 [article] Optimization of energy and water consumption in corn-based ethanol plants [texte imprimé] / Elvis Ahmetovic, Auteur ; Mariano Martin, Auteur ; Ignacio E. Grossmann, Auteur . - 2010 . - pp 7972–7982. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 17 (Septembre 1, 2010) . - pp 7972–7982 Mots-clés : Optimization  Energy  Corn  based  ethanol. Résumé : In this paper we study the simultaneous energy and water consumption in the conceptual design of corn-based ethanol plants. A major goal is to reduce the freshwater consumption and wastewater discharge. We consider the corn-based ethanol plant reported in Karuppiah, et al. AICHE J. 2008, 54, 1499−1525. We review the major alternatives in the optimization of energy consumption and its impact in water consumption. Next, for each of the alternatives we synthesize an integrated process water network. This requires closing the loops for process and cooling water and steam, and implementing the proper treatment for the water streams. We show that minimizing energy consumption leads to process water networks with minimum water consumption. As a result, freshwater use is reduced to 1.54 galwater/galethanol, revealing that it is potentially possible to achieve levels of freshwater consumption that are significantly lower than the ones in current industrial operation and that wastewater discharged can also be reduced. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1000955

Optimization of water consumption in second generation bioethanol plants / Mariano Martin in Industrial & engineering chemistry research, Vol. 50 N° 7 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 3705–3721 Titre : Optimization of water consumption in second generation bioethanol plants Type de document : texte imprimé Auteurs : Mariano Martin, Auteur ; Elvis Ahmetovic, Auteur ; Ignacio E. Grossmann, Auteur Année de publication : 2011 Article en page(s) : pp. 3705–3721 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Optimization  Water  Bioethanol Résumé : In this work we address the water consumption optimization of second generation bioethanol production plants from lignocellulosic switchgrass when using thermo-chemical, thermo-biochemical, or biochemical routes considering corn-based ethanol as a reference. To optimize the water consumption a three stage method is used. First, energy consumption is optimized in the production processes, which reduces the cooling needs of the processes and thus, the water losses by evaporation and drift in the cooling tower. Next, a number of technologies are considered to partially substitute the use of water as cooling agent. Finally, the optimal water networks for each of the ethanol production processes are designed by determining water consumption, reuse, and recycle and the required treatment using a superstructure optimization approach. The resulting water consumption ratios range from 1.5 to 3 gal/gal, which are in the range or even below the amount of water needed for gasoline production and with low or no water discharge depending on the process. Further reduction can be obtained by using air cooling and if the water released from the crop can be properly recovered and treated. Under these conditions the water consumption ratios range from 0.4 to 1.7 gal/gal and with no or low water discharge. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101175p [article] Optimization of water consumption in second generation bioethanol plants [texte imprimé] / Mariano Martin, Auteur ; Elvis Ahmetovic, Auteur ; Ignacio E. Grossmann, Auteur . - 2011 . - pp. 3705–3721. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 3705–3721 Mots-clés : Optimization  Water  Bioethanol Résumé : In this work we address the water consumption optimization of second generation bioethanol production plants from lignocellulosic switchgrass when using thermo-chemical, thermo-biochemical, or biochemical routes considering corn-based ethanol as a reference. To optimize the water consumption a three stage method is used. First, energy consumption is optimized in the production processes, which reduces the cooling needs of the processes and thus, the water losses by evaporation and drift in the cooling tower. Next, a number of technologies are considered to partially substitute the use of water as cooling agent. Finally, the optimal water networks for each of the ethanol production processes are designed by determining water consumption, reuse, and recycle and the required treatment using a superstructure optimization approach. The resulting water consumption ratios range from 1.5 to 3 gal/gal, which are in the range or even below the amount of water needed for gasoline production and with low or no water discharge depending on the process. Further reduction can be obtained by using air cooling and if the water released from the crop can be properly recovered and treated. Under these conditions the water consumption ratios range from 0.4 to 1.7 gal/gal and with no or low water discharge. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101175p