Documents disponibles écrits par cet auteur

Enhancement of the flotation deinking selectivity by natural polymeric dispersants / Elisa Zeno in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9322-9329 Titre : Enhancement of the flotation deinking selectivity by natural polymeric dispersants Type de document : texte imprimé Auteurs : Elisa Zeno, Auteur ; Patrick Huber, Auteur ; Xavier Rousset, Auteur Année de publication : 2010 Article en page(s) : pp. 9322-9329 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Dispersant  Deinking  Flotation Résumé : The impact of natural polymeric dispersants, that is, carboxymethyl cellulose and guar gum, on the flotation selectivity was investigated on a flotation deinking pilot plant. Their effect on pulp flocculation, air bubble size, and gas hold-up was determined by implementing a fiber flocculation sensor, an automated bubble measurement device, and a gas hold-up sensor on the pilot cell. Dispersants reduced pulp flocculation and induced an increase in gas hold-up and a slight decrease in the air bubble size. Their addition promoted ink removal and, at the same time, depressed fiber entrainment and mineral fillers flotation, thus increasing exceptionally the flotation selectivity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23289666 [article] Enhancement of the flotation deinking selectivity by natural polymeric dispersants [texte imprimé] / Elisa Zeno, Auteur ; Patrick Huber, Auteur ; Xavier Rousset, Auteur . - 2010 . - pp. 9322-9329. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9322-9329 Mots-clés : Dispersant  Deinking  Flotation Résumé : The impact of natural polymeric dispersants, that is, carboxymethyl cellulose and guar gum, on the flotation selectivity was investigated on a flotation deinking pilot plant. Their effect on pulp flocculation, air bubble size, and gas hold-up was determined by implementing a fiber flocculation sensor, an automated bubble measurement device, and a gas hold-up sensor on the pilot cell. Dispersants reduced pulp flocculation and induced an increase in gas hold-up and a slight decrease in the air bubble size. Their addition promoted ink removal and, at the same time, depressed fiber entrainment and mineral fillers flotation, thus increasing exceptionally the flotation selectivity. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23289666

Optimization and management of flotation deinking banks by process simulation / Davide Beneventi in Industrial & engineering chemistry research, Vol. 48 N° 8 (Avril 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3964–3972 Titre : Optimization and management of flotation deinking banks by process simulation Type de document : texte imprimé Auteurs : Davide Beneventi, Auteur ; Elisa Zeno, Auteur ; Patrice Nortier, Auteur Année de publication : 2009 Article en page(s) : pp. 3964–3972 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Flotation  deinking  banks  Mixed  tank/column  cells Résumé : In this work, the contribution of flotation deinking banks design on ink removal efficiency, selectivity, and specific energy consumption was simulated using a semiempirical approach. Single-stage with mixed tank/column cells, two-stage, and three-stage configurations were evaluated, and the total number of flotation units in each stage and their interconnection were used as main variables. Explicit correlations between ink removal efficiency, selectivity, energy consumption, and line design were developed for each configuration. When considering a conventional two-stage configuration as reference, a decrease in the specific energy consumption for constant ink removal efficiency and selectivity was obtained with the single-stage bank with a stack of flotation columns at the front of the line, whereas an increase in ink removal selectivity for constant ink removal efficiency and specific energy consumption was obtained with the three-stage bank. The present results show that the performance of conventional flotation deinking banks can be improved by optimizing process design and implementing mixed tank/column technologies in the same deinking line. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801753j [article] Optimization and management of flotation deinking banks by process simulation [texte imprimé] / Davide Beneventi, Auteur ; Elisa Zeno, Auteur ; Patrice Nortier, Auteur . - 2009 . - pp. 3964–3972. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3964–3972 Mots-clés : Flotation  deinking  banks  Mixed  tank/column  cells Résumé : In this work, the contribution of flotation deinking banks design on ink removal efficiency, selectivity, and specific energy consumption was simulated using a semiempirical approach. Single-stage with mixed tank/column cells, two-stage, and three-stage configurations were evaluated, and the total number of flotation units in each stage and their interconnection were used as main variables. Explicit correlations between ink removal efficiency, selectivity, energy consumption, and line design were developed for each configuration. When considering a conventional two-stage configuration as reference, a decrease in the specific energy consumption for constant ink removal efficiency and selectivity was obtained with the single-stage bank with a stack of flotation columns at the front of the line, whereas an increase in ink removal selectivity for constant ink removal efficiency and specific energy consumption was obtained with the three-stage bank. The present results show that the performance of conventional flotation deinking banks can be improved by optimizing process design and implementing mixed tank/column technologies in the same deinking line. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801753j