The adsorption of methyl violet on activated carbon from aqueous solutions
AuthorAlp, Zeliha Gamze
Kızılduman, Berna Koçer
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In this study, the activated carbon was prepared from the pomegranate shell by chemical activation, characterized using BET, FTIR-ATR, XRD, SEM and DTA/TG and investigated the adsorption properties. The adsorption process was studied as a function of initial pH of the methyl violet solutions and temperature. The extent of adsorption was found to be dependent on the aqueous phase pH and solution temperature. Equili-brium isotherms were determined to assess the maximum adsorption capacity of the activated carbon for methyl violet. The experimental data were examined by Langmuir and Freundlich iso-therms, and found that the isotherm data were reasonably well correlated by Langmuir isotherm. It was found that adsorption process was endothermic. Adsorption isosteric enthalpy was calculated to be 41.6 kJ/mol.