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Preparation, characterization and application of a [copper (II) / ethylenediamine – cotton] complex for the removal of AB25 from aqueous solution in a laboratory scale column. / Amel El Ghali in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011) 

Public ISBD [article]  in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.18-26 Titre : Preparation, characterization and application of a [copper (II) / ethylenediamine – cotton] complex for the removal of AB25 from aqueous solution in a laboratory scale column. Type de document : texte imprimé Auteurs : Amel El Ghali, Auteur ; Mohamed Hassen V. Baouab, Auteur ; Mohamed Sadok Roudesli, Auteur Année de publication : 2012 Article en page(s) : pp.18-26 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Cotton  Heavy  metal  Kinetics  Dyes  Fixed  bed  adsorption  Modeling Résumé : Ethylenediamine grafted cellulosic fibers (ED–cotton) were synthesized by the reaction of chlorodeoxycellulose (CDC) with (ED). The performance of the modified materials was characterized by Fourier transform-infrared (FTIR), atomic force microscopy (AFM) and elemental analysis of nitrogen. The prepared ED–cotton support was assessed for the removal of copper ions from aqueoussolutions using a batch process. The effects of pH, copper initial concentration and contact time were investigated. The kinetic adsorption was found to follow the pseudo-second-order kinetic model. Results revealed the formation of a 1:1 complex as proved by the adsorption limit. The binary system [Cu(II)/ED–cotton] was then tested in a bed fixed column for the adsorption of Acid Blue 25, as ligand in the metal-coordinating process. The effects of various experimental conditions, such as the flow rate, bed height and internal diameter, were studied. The Bed Depth Service Time (BDST) model was found suitable for the description of breakthrough curves at all experimental conditions. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711008734 [article] Preparation, characterization and application of a [copper (II) / ethylenediamine – cotton] complex for the removal of AB25 from aqueous solution in a laboratory scale column. [texte imprimé] / Amel El Ghali, Auteur ; Mohamed Hassen V. Baouab, Auteur ; Mohamed Sadok Roudesli, Auteur . - 2012 . - pp.18-26. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.18-26 Mots-clés : Cotton  Heavy  metal  Kinetics  Dyes  Fixed  bed  adsorption  Modeling Résumé : Ethylenediamine grafted cellulosic fibers (ED–cotton) were synthesized by the reaction of chlorodeoxycellulose (CDC) with (ED). The performance of the modified materials was characterized by Fourier transform-infrared (FTIR), atomic force microscopy (AFM) and elemental analysis of nitrogen. The prepared ED–cotton support was assessed for the removal of copper ions from aqueoussolutions using a batch process. The effects of pH, copper initial concentration and contact time were investigated. The kinetic adsorption was found to follow the pseudo-second-order kinetic model. Results revealed the formation of a 1:1 complex as proved by the adsorption limit. The binary system [Cu(II)/ED–cotton] was then tested in a bed fixed column for the adsorption of Acid Blue 25, as ligand in the metal-coordinating process. The effects of various experimental conditions, such as the flow rate, bed height and internal diameter, were studied. The Bed Depth Service Time (BDST) model was found suitable for the description of breakthrough curves at all experimental conditions. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711008734