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Two-parameter isotherms of methyl orange sorption by pinecone derived activated carbon
Iranian Journal of Environmental Health Science and Engineering. 2009; 6 (4): 285-294
Dans Anglais | IMEMR | ID: emr-93651
ABSTRACT
The adsorption of a mono azo dye methyl-orange [MeO] onto granular pinecone derived activated carbon [GPAC], from aqueous solutions, was studied in a batch system. Seven two-parameter isotherm models Langmuir, Freundlich, Dubinin-Radushkevic, Temkin, Halsey, Jovanovic and Hurkins-Jura were used to fit the experimental data. The results revealed that the adsorption isotherm models fitted the data in the order of Jovanovic [X[2]=1.374] > Langmuir > Dubinin-Radushkevic > Temkin > Freundlich > Halsey > Hurkins-Jura isotherms. Adsorption isotherms modeling showed that the interaction of dye with activated carbon surface is localized monolayer adsorption. A comparison of kinetic models was evaluated for the pseudo-second order, Elovich and Lagergren kinetic models. Lagergren first order model was found to agree well with the experimental data [X[2]=9.231]. In order to determine the best-fit isotherm and kinetic models, two error analysis methods of Residual Mean Square Error and Chi-square statistic [X[2]] were used to evaluate the data
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Indice: Méditerranée orientale Sujet Principal: Industrie textile / Pollution chimique de l'eau / Carbone / Cinétique / Santé environnementale / Modèles statistiques / Adsorption / Agents colorants langue: Anglais Texte intégral: Iran. J. Environ. Health Sci. Eng. Année: 2009

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Recherche sur Google
Indice: Méditerranée orientale Sujet Principal: Industrie textile / Pollution chimique de l'eau / Carbone / Cinétique / Santé environnementale / Modèles statistiques / Adsorption / Agents colorants langue: Anglais Texte intégral: Iran. J. Environ. Health Sci. Eng. Année: 2009