Documents disponibles écrits par cet auteur

Removal of mono - and multicomponent BTX compounds from effluents using activated carbon from coconut shell as the adsorbent / Selene Maria de Arruda Guelli Ulson de Souza in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6461-6469 Titre : Removal of mono - and multicomponent BTX compounds from effluents using activated carbon from coconut shell as the adsorbent Type de document : texte imprimé Auteurs : Selene Maria de Arruda Guelli Ulson de Souza, Auteur ; Adriana Dervanoski da Luz, Auteur ; Adriano da Silva, Auteur Année de publication : 2012 Article en page(s) : pp. 6461-6469 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Activated  carbon Résumé : The adsorption of benzene, toluene, and o-xylene (BTX) in monocomponent and multicomponent aqueous solutions onto activated carbon was studied in a batch reactor at 23 °C for wastewater reuse. The kinetics and thermodynamic equilibrium parameters were obtained for all compounds, where the competitiveness for the active site of adsorption was investigated. The results showed that the order of monocomponent adsorption of these three contaminants is o-xylene > toluene > benzene, and in the multicomponent mixture o-xylene is the most competitive contaminant for the active site of adsorption. The adsorption kinetics were fitted to the homogeneous diffusion model, giving linear correlation coefficients higher than 0.96. The Langmuir isotherm provided the best fit with the monocomponent experimental data. In this study, the multicomponent mixture isotherms were obtained and compared to the models found in the literature. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867297 [article] Removal of mono - and multicomponent BTX compounds from effluents using activated carbon from coconut shell as the adsorbent [texte imprimé] / Selene Maria de Arruda Guelli Ulson de Souza, Auteur ; Adriana Dervanoski da Luz, Auteur ; Adriano da Silva, Auteur . - 2012 . - pp. 6461-6469. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6461-6469 Mots-clés : Activated  carbon Résumé : The adsorption of benzene, toluene, and o-xylene (BTX) in monocomponent and multicomponent aqueous solutions onto activated carbon was studied in a batch reactor at 23 °C for wastewater reuse. The kinetics and thermodynamic equilibrium parameters were obtained for all compounds, where the competitiveness for the active site of adsorption was investigated. The results showed that the order of monocomponent adsorption of these three contaminants is o-xylene > toluene > benzene, and in the multicomponent mixture o-xylene is the most competitive contaminant for the active site of adsorption. The adsorption kinetics were fitted to the homogeneous diffusion model, giving linear correlation coefficients higher than 0.96. The Langmuir isotherm provided the best fit with the monocomponent experimental data. In this study, the multicomponent mixture isotherms were obtained and compared to the models found in the literature. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867297

Water reuse and wastewater minimization in chemical industries using differentiated regeneration of contaminants / Selene Maria de Arruda Guelli Ulson de Souza in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7428-7436 Titre : Water reuse and wastewater minimization in chemical industries using differentiated regeneration of contaminants Type de document : texte imprimé Auteurs : Selene Maria de Arruda Guelli Ulson de Souza, Auteur ; Marcelo Fonseca Xavier, Auteur ; Adriano da Silva, Auteur Année de publication : 2011 Article en page(s) : pp. 7428-7436 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Pollution  Chemical  industry  Waste  water  Reuse Résumé : There is currently a great demand for tools that allow the analysis of water networks in a practical and objective way. In the modern scenarios chemical industries need to consume water in more rational forms to minimize the risk of water scarcity caused by pollution. Some of the alternatives for reducing water consumption involve the reuse and/or recycling of wastewater, such as the methodology based on the water source diagram (WSD), which is a flexible and dynamic alternative approach to generating viable scenarios for the management of water networks. In this study the implementation of the WSD to support the optimization software (GAMS) in a process of differentiated regeneration is studied, treating the operation of a chemical process of interest in an objective and systemic way. The method can be applied to resource networks with multiple impurities, even when the utility contains impurities. The possibilities for maximum reuse of water and differentiated effluent regeneration are studied, aiming to minimize the total flow of wastewater being treated inside the treatment units and the global cost of the network. The application of this methodology is illustrated through two case studies. The results show that this procedure allows the successful identification of different scenarios which present a condition of minimum water consumption together with a minimum network operation cost. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239058 [article] Water reuse and wastewater minimization in chemical industries using differentiated regeneration of contaminants [texte imprimé] / Selene Maria de Arruda Guelli Ulson de Souza, Auteur ; Marcelo Fonseca Xavier, Auteur ; Adriano da Silva, Auteur . - 2011 . - pp. 7428-7436. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7428-7436 Mots-clés : Pollution  Chemical  industry  Waste  water  Reuse Résumé : There is currently a great demand for tools that allow the analysis of water networks in a practical and objective way. In the modern scenarios chemical industries need to consume water in more rational forms to minimize the risk of water scarcity caused by pollution. Some of the alternatives for reducing water consumption involve the reuse and/or recycling of wastewater, such as the methodology based on the water source diagram (WSD), which is a flexible and dynamic alternative approach to generating viable scenarios for the management of water networks. In this study the implementation of the WSD to support the optimization software (GAMS) in a process of differentiated regeneration is studied, treating the operation of a chemical process of interest in an objective and systemic way. The method can be applied to resource networks with multiple impurities, even when the utility contains impurities. The possibilities for maximum reuse of water and differentiated effluent regeneration are studied, aiming to minimize the total flow of wastewater being treated inside the treatment units and the global cost of the network. The application of this methodology is illustrated through two case studies. The results show that this procedure allows the successful identification of different scenarios which present a condition of minimum water consumption together with a minimum network operation cost. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239058