Özet:

Dyes are one of the most important industrial pollutants, especially in textile industries. In this work the Modified Pumice Stone (MPS) has been applied for removal of the Methylene Blue dye from aqueous environment. The effect of pH, contact time, initial concentration and amount of adsorbent on the removal efficiency of the Methylene Blue in batch experiments were conducted. In order to investigate the mechanism of adsorption process, several kinetic models including pseudo-first order and pseudo-second order were used. In addition, equilibrium data was fitted on to Langmuir, Freundlich and Temkin models. Results showed that the adsorption of the Methylene Blue was enhanced with increasing initial dye concentration, pH and contact time. The results of equilibrium data indicated the Freundlich isotherm model fitted the best. Also the kinetic studies showed the removal of Methylene Blue following pseudo-second-order kinetics.

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