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Intermediary products in the catalytic wet air oxidation of crystal violet with Ni / MgAlO as catalyst / Gabriel Ovejero in Industrial & engineering chemistry research, Vol. 51 N° 35 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 35 (Septembre 2012) . - pp. 11367-11372 Titre : Intermediary products in the catalytic wet air oxidation of crystal violet with Ni / MgAlO as catalyst Type de document : texte imprimé Auteurs : Gabriel Ovejero, Auteur ; Araceli Rodríguez, Auteur ; Ana Vallet, Auteur Année de publication : 2012 Article en page(s) : pp. 11367-11372 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst  Oxidation  Wet  air  Catalytic  reaction Résumé : In this study, the performance of Ni supported on MgAlO catalyst to promote Oxidation of crystal violet was investigated. Oxidation experiments were carried out at T = 140―200 °C and total pressures up to 50 bar. The catalyst was prepared by incipient wetness impregnation to obtain catalyst with metal loading of 7 wt %. A detailed reaction network for the wet air oxidation and catalytic wet air oxidation of crystal ciolet on Ni/MgAlO catalyst is proposed in this study. The reaction network proposed takes into account all the detected intermediate products during the dye oxidation. This work represents the first determination of the reaction network of this compound in wet air and catalytic wet air oxidation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26324785 [article] Intermediary products in the catalytic wet air oxidation of crystal violet with Ni / MgAlO as catalyst [texte imprimé] / Gabriel Ovejero, Auteur ; Araceli Rodríguez, Auteur ; Ana Vallet, Auteur . - 2012 . - pp. 11367-11372. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 35 (Septembre 2012) . - pp. 11367-11372 Mots-clés : Catalyst  Oxidation  Wet  air  Catalytic  reaction Résumé : In this study, the performance of Ni supported on MgAlO catalyst to promote Oxidation of crystal violet was investigated. Oxidation experiments were carried out at T = 140―200 °C and total pressures up to 50 bar. The catalyst was prepared by incipient wetness impregnation to obtain catalyst with metal loading of 7 wt %. A detailed reaction network for the wet air oxidation and catalytic wet air oxidation of crystal ciolet on Ni/MgAlO catalyst is proposed in this study. The reaction network proposed takes into account all the detected intermediate products during the dye oxidation. This work represents the first determination of the reaction network of this compound in wet air and catalytic wet air oxidation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26324785

Removal of atenolol and isoproturon in aqueous solutions by adsorption in a fixed - bed column / José Luis Sotelo in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 5045–5055 Titre : Removal of atenolol and isoproturon in aqueous solutions by adsorption in a fixed - bed column Type de document : texte imprimé Auteurs : José Luis Sotelo, Auteur ; Gabriel Ovejero, Auteur ; Araceli Rodríguez, Auteur Année de publication : 2012 Article en page(s) : pp. 5045–5055 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Atenolol  Isoproturon  Adsorption Résumé : In this work, the removal of a β-blocker, atenolol, and a pesticide, isoproturon, from aqueous solutions by adsorption on granular activated carbon fixed-bed columns has been studied. The effect of important operation parameters on breakthrough curves as column length (Z = 1.0–3.0 cm), initial concentration of atenolol or isoproturon (C0 = 50.0–500.0 μg·L–1), and volumetric flow rate (Q = 1.5 mL·min–1) was studied. Breakthrough time of the bed was found to increase with an increase in the value of the column length, and with a decrease in the value of initial concentration or flow rate. Mathematical models, as Bohart–Adams, Thomas, Yoon–Nelson, and Clark were applied to the experimental data for the prediction of the breakthrough curves, and to determine the characteristic parameters of the bed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300334q [article] Removal of atenolol and isoproturon in aqueous solutions by adsorption in a fixed - bed column [texte imprimé] / José Luis Sotelo, Auteur ; Gabriel Ovejero, Auteur ; Araceli Rodríguez, Auteur . - 2012 . - pp. 5045–5055. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 5045–5055 Mots-clés : Atenolol  Isoproturon  Adsorption Résumé : In this work, the removal of a β-blocker, atenolol, and a pesticide, isoproturon, from aqueous solutions by adsorption on granular activated carbon fixed-bed columns has been studied. The effect of important operation parameters on breakthrough curves as column length (Z = 1.0–3.0 cm), initial concentration of atenolol or isoproturon (C0 = 50.0–500.0 μg·L–1), and volumetric flow rate (Q = 1.5 mL·min–1) was studied. Breakthrough time of the bed was found to increase with an increase in the value of the column length, and with a decrease in the value of initial concentration or flow rate. Mathematical models, as Bohart–Adams, Thomas, Yoon–Nelson, and Clark were applied to the experimental data for the prediction of the breakthrough curves, and to determine the characteristic parameters of the bed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300334q

Removal of dyes from wastewaters by adsorption on sepiolite and pansil / Araceli Rodríguez in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3207–3216 Titre : Removal of dyes from wastewaters by adsorption on sepiolite and pansil Type de document : texte imprimé Auteurs : Araceli Rodríguez, Auteur ; Gabriel Ovejero, Auteur ; María Mestanza, Auteur Année de publication : 2010 Article en page(s) : pp. 3207–3216 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Dyes  Wastewaters  Adsorption  Sepiolite  Pansil Résumé : In this work, experiments to examine the liquid-phase adsorption features of sepiolite and pansil have been conducted with synthetic dye wastewaters prepared from commercial grade dye, methylene blue (MB). The adsorption experimental results were analyzed in terms of the equilibrium adsorption capacity and equilibrium time. The Langmuir, Freundlich, and Sips adsorption models are applied to describe the isotherm equilibrium and to determine some parameters. The Sips model agrees well with the experimental data, and the pseudo-second-order kinetic model reproduces properly the kinetic experimental data of the system MB−sepiolite. The highest MB adsorption was obtained at acid pH for sepiolite and at basic pH for pansil. Besides, several kinetics models were employed to study the adsorption mechanism of MB on sepiolite. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9017435 [article] Removal of dyes from wastewaters by adsorption on sepiolite and pansil [texte imprimé] / Araceli Rodríguez, Auteur ; Gabriel Ovejero, Auteur ; María Mestanza, Auteur . - 2010 . - pp. 3207–3216. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3207–3216 Mots-clés : Dyes  Wastewaters  Adsorption  Sepiolite  Pansil Résumé : In this work, experiments to examine the liquid-phase adsorption features of sepiolite and pansil have been conducted with synthetic dye wastewaters prepared from commercial grade dye, methylene blue (MB). The adsorption experimental results were analyzed in terms of the equilibrium adsorption capacity and equilibrium time. The Langmuir, Freundlich, and Sips adsorption models are applied to describe the isotherm equilibrium and to determine some parameters. The Sips model agrees well with the experimental data, and the pseudo-second-order kinetic model reproduces properly the kinetic experimental data of the system MB−sepiolite. The highest MB adsorption was obtained at acid pH for sepiolite and at basic pH for pansil. Besides, several kinetics models were employed to study the adsorption mechanism of MB on sepiolite. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9017435