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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