Two-Parameter Isotherms Of Methyl Orange Sorption By Pinecone Derived Activated Carbon
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 f...
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Veröffentlicht in: | Iranian journal of environmental health science & engineering 2010-03, Vol.6 (4) |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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 (X2=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 (X2=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 (X2)
were used to evaluate the data. |
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ISSN: | 1735-1979 |