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Bioseparation of Pb (II) and Cd (II) from aqueoussolution using corkwastebiomass. / Montserrat Lopez-Mesas in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011) 

Public ISBD [article]  in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.9-17 Titre : Bioseparation of Pb (II) and Cd (II) from aqueoussolution using corkwastebiomass. : Modeling and optimization of the parameters of the biosorption step Type de document : texte imprimé Auteurs : Montserrat Lopez-Mesas, Auteur ; Enrique Ruperto Navarrete, Auteur ; Fernando Carrillo, Auteur Année de publication : 2012 Article en page(s) : pp.9-17 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Cork  Heavy  metals  Kinetic  Isotherm  Biosorption Résumé : In this work the ability of corkwastes to remove Cd(II) and Pb(II) from aqueoussolutions has been studied. The kinetics of the biosorption system, the influence of the aqueous pH and the initial metal concentration on the metal uptake were investigated, showing a pH dependent profile. The maximum sorption for both metals was found at pH 5, independently that if the metals were in individual solutions or mixed. When a solution of the mixed metals were studied, a reduction in the Cd(II) uptake was observed showing a clear competition between the metals which was corroborated by the P-factor approach, behavior probably due to a lower attraction of this metal towards the corresponding active groups of the cork. Finally, the cork has been evaluated by FTIR and SEM in order to determine if the biosorption process modifies its chemical structure and morphology, respectively. Cork has been proved to be an efficient biomaterial useful for heavy metal separation purposes that is not altered by the process. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711008539 [article] Bioseparation of Pb (II) and Cd (II) from aqueoussolution using corkwastebiomass. : Modeling and optimization of the parameters of the biosorption step [texte imprimé] / Montserrat Lopez-Mesas, Auteur ; Enrique Ruperto Navarrete, Auteur ; Fernando Carrillo, Auteur . - 2012 . - pp.9-17. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.9-17 Mots-clés : Cork  Heavy  metals  Kinetic  Isotherm  Biosorption Résumé : In this work the ability of corkwastes to remove Cd(II) and Pb(II) from aqueoussolutions has been studied. The kinetics of the biosorption system, the influence of the aqueous pH and the initial metal concentration on the metal uptake were investigated, showing a pH dependent profile. The maximum sorption for both metals was found at pH 5, independently that if the metals were in individual solutions or mixed. When a solution of the mixed metals were studied, a reduction in the Cd(II) uptake was observed showing a clear competition between the metals which was corroborated by the P-factor approach, behavior probably due to a lower attraction of this metal towards the corresponding active groups of the cork. Finally, the cork has been evaluated by FTIR and SEM in order to determine if the biosorption process modifies its chemical structure and morphology, respectively. Cork has been proved to be an efficient biomaterial useful for heavy metal separation purposes that is not altered by the process. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711008539