Adsorptive removal of aromatic compounds present in wastewater by using dealuminated faujasite zeolite / Bachar Koubaissy in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5705-5713 Titre : Adsorptive removal of aromatic compounds present in wastewater by using dealuminated faujasite zeolite Type de document : texte imprimé Auteurs : Bachar Koubaissy, Auteur ; Guy Joly, Auteur ; Isabelle Batonneau-Gener, Auteur Année de publication : 2011 Article en page(s) : pp. 5705-5713 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Zeolite Waste water Résumé : The adsorption of aromatic compounds (nitrophenols, nitroaniline, chlorophenols, chloroanilines) present in wastewater using dealuminated faujasite zeolite has been investigated. The adsorption capacity of faujasite zeolite depends on the pH, (the neutral form of the pollutants is more easily adsorbed into zeolite than the dissociated form), and on the solubility in water of the aromatic compounds. The adsorption capacity for a family of compounds increases with decreasing water solubility. In this study, we have shown that the pollutant acidic character enhances their adsorption into the zeolite. Thus, the changeover ofphenol to aniline decreases the adsorbent-adsorbate interaction, as well as in the substitution of the NO2 group by a Cl group. The adsorption data was analyzed using the Fowler-Guggenheim isotherm. The sorption mechanism of nitrophenol in faujasite zeolite was investigated using Raman spectroscopy and through a thermodesorption kinetic study. The relative affinity of the phenolic compounds toward the surface of the dealuminated faujasite was related to the electron donor-acceptor complex formed between the basic sites on the zeolite (oxygen) and the hydrogens (acidic site) of the aromatic ring and of the phenols and anilines functions. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128695 [article] Adsorptive removal of aromatic compounds present in wastewater by using dealuminated faujasite zeolite [texte imprimé] / Bachar Koubaissy, Auteur ; Guy Joly, Auteur ; Isabelle Batonneau-Gener, Auteur . - 2011 . - pp. 5705-5713. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5705-5713 Mots-clés : Zeolite Waste water Résumé : The adsorption of aromatic compounds (nitrophenols, nitroaniline, chlorophenols, chloroanilines) present in wastewater using dealuminated faujasite zeolite has been investigated. The adsorption capacity of faujasite zeolite depends on the pH, (the neutral form of the pollutants is more easily adsorbed into zeolite than the dissociated form), and on the solubility in water of the aromatic compounds. The adsorption capacity for a family of compounds increases with decreasing water solubility. In this study, we have shown that the pollutant acidic character enhances their adsorption into the zeolite. Thus, the changeover ofphenol to aniline decreases the adsorbent-adsorbate interaction, as well as in the substitution of the NO2 group by a Cl group. The adsorption data was analyzed using the Fowler-Guggenheim isotherm. The sorption mechanism of nitrophenol in faujasite zeolite was investigated using Raman spectroscopy and through a thermodesorption kinetic study. The relative affinity of the phenolic compounds toward the surface of the dealuminated faujasite was related to the electron donor-acceptor complex formed between the basic sites on the zeolite (oxygen) and the hydrogens (acidic site) of the aromatic ring and of the phenols and anilines functions. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128695

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