Title of article :
TWO-PARAMETER ISOTHERMS OF METHYL ORANGE SORPTION BY PINECONE DERIVED ACTIVATED CARBON
Author/Authors :
Samarghandi, M.R hamadan university of medical sciences - School of Public Health and Center for Health Research - Department of Environmental Health Engineering, همدان, ايران , Hadi, M. , Moayedi, S. hamadan university of medical sciences - School of Public Health and Center for Health Research - Department of Environmental Health Engineering, همدان, ايران , Barjasteh Askari, F. hamadan university of medical sciences - School of Public Health and Center for Health Research - Department of Environmental Health Engineering, همدان, ايران
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 of 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.
Keywords :
Adsorption isotherms , Methyl orange , Kinetic models , Activated carbon
Journal title :
Iranian Journal of Environmental Health Science and Engineering (IJEHSE)
Journal title :
Iranian Journal of Environmental Health Science and Engineering (IJEHSE)
