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Phenolremoval from aqueous solution by activated carbon produced from avocado kernel seeds / Liana Alvares Rodrigues in Chemical engineering journal, Vol. 174 N° 1 (Octobre 2011) 

Public ISBD [article]  in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.49-57 Titre : Phenolremoval from aqueous solution by activated carbon produced from avocado kernel seeds Type de document : texte imprimé Auteurs : Liana Alvares Rodrigues, Auteur ; Maria Lucia Caetano Pinto Silva, Auteur ; Manoel Orlando Alvarez-Mendes, Auteur Année de publication : 2012 Article en page(s) : pp.49-57 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Adsorption  Activated  carbon  Avocado  kernel  Phenol Résumé : Activatedcarbon derived from avocado kernels (AAC) was evaluated for its ability to remove phenol. The Brunauer–Emmett–Teller (BET) surface area of the AAC was 206 m2 g−1 and the total pore volume was 0.100 cm3 g−1. The kinetic of the adsorption process was described by a pseudo-second-order rate model. The maximum uptake was obtained at pH values between 4 and 8.5. The optimum adsorbent dose obtained was 0.1 g. The thermodynamic parameters exhibited the feasibility and the spontaneous nature of the adsorption process. Adsorption isotherms showed that the interaction of phenol with AAC surface was described by a localized monolayer adsorption. The adsorption mechanism was discussed based on experimental results, and the π–π interactions were considered to be an important parameter in the adsorption process. The adsorbent regeneration was investigated using several types of desorbing agents, but no agent show any promising result. The results showed that the prepared activatedcarbon was an effective adsorbent for phenolremoval from aqueoussolution. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711009727 [article] Phenolremoval from aqueous solution by activated carbon produced from avocado kernel seeds [texte imprimé] / Liana Alvares Rodrigues, Auteur ; Maria Lucia Caetano Pinto Silva, Auteur ; Manoel Orlando Alvarez-Mendes, Auteur . - 2012 . - pp.49-57. Génie chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 174 N° 1 (Octobre 2011) . - pp.49-57 Mots-clés : Adsorption  Activated  carbon  Avocado  kernel  Phenol Résumé : Activatedcarbon derived from avocado kernels (AAC) was evaluated for its ability to remove phenol. The Brunauer–Emmett–Teller (BET) surface area of the AAC was 206 m2 g−1 and the total pore volume was 0.100 cm3 g−1. The kinetic of the adsorption process was described by a pseudo-second-order rate model. The maximum uptake was obtained at pH values between 4 and 8.5. The optimum adsorbent dose obtained was 0.1 g. The thermodynamic parameters exhibited the feasibility and the spontaneous nature of the adsorption process. Adsorption isotherms showed that the interaction of phenol with AAC surface was described by a localized monolayer adsorption. The adsorption mechanism was discussed based on experimental results, and the π–π interactions were considered to be an important parameter in the adsorption process. The adsorbent regeneration was investigated using several types of desorbing agents, but no agent show any promising result. The results showed that the prepared activatedcarbon was an effective adsorbent for phenolremoval from aqueoussolution. ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science/article/pii/S1385894711009727