Schiff base ligands immobilized on a nanosized SiO2 – Al2O3 mixed oxide as adsorbents for heavy metals / Mohammad Arshadi in Industrial & engineering chemistry research, Vol. 50 N° 24 (Décembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp. 13628-13635 Titre : Schiff base ligands immobilized on a nanosized SiO2 – Al2O3 mixed oxide as adsorbents for heavy metals Type de document : texte imprimé Auteurs : Mohammad Arshadi, Auteur ; Mehran Ghiaci, Auteur ; Antonio Gil, Auteur Année de publication : 2012 Article en page(s) : pp. 13628-13635 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Heavy metal Ligand Résumé : Three adsorbents have been synthesized by immobilization of Schiff base ligands on the surface of SiO2―Al2O3 mixed oxides and evaluated for the removal of Cd(II) and Pb(II) from aqueous solutions. The contact time to attain equilibrium for maximum adsorption was 120 min. These heterogeneous Schiffbase ligands were found to be effective adsorbents for the removal of heavy metal ions from solution, with Si/Al-pr-N=salicylaldehyde having a high adsorption capacity for Cd(II) ions and Si/Al-pr-N=pyridine-2-carbaldehyde having a high adsorption capacity for Pb(II) ions. The adsorption of heavy metal ions has been studied in terms of pseudo-first-order and pseudo-second-order kinetics, and the Freundlich, Langmuir, and Langmuir—Freundlich isotherm models have also been applied to the equilibrium adsorption data. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25299823 [article] Schiff base ligands immobilized on a nanosized SiO2 – Al2O3 mixed oxide as adsorbents for heavy metals [texte imprimé] / Mohammad Arshadi, Auteur ; Mehran Ghiaci, Auteur ; Antonio Gil, Auteur . - 2012 . - pp. 13628-13635. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp. 13628-13635 Mots-clés : Heavy metal Ligand Résumé : Three adsorbents have been synthesized by immobilization of Schiff base ligands on the surface of SiO2―Al2O3 mixed oxides and evaluated for the removal of Cd(II) and Pb(II) from aqueous solutions. The contact time to attain equilibrium for maximum adsorption was 120 min. These heterogeneous Schiffbase ligands were found to be effective adsorbents for the removal of heavy metal ions from solution, with Si/Al-pr-N=salicylaldehyde having a high adsorption capacity for Cd(II) ions and Si/Al-pr-N=pyridine-2-carbaldehyde having a high adsorption capacity for Pb(II) ions. The adsorption of heavy metal ions has been studied in terms of pseudo-first-order and pseudo-second-order kinetics, and the Freundlich, Langmuir, and Langmuir—Freundlich isotherm models have also been applied to the equilibrium adsorption data. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25299823

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