Modeling and optimization of reactive yellow 145 dye removal process onto synthesized MnOX-CeO2 using response surface methodology

Abstract

In this research, MnOx- CeO2 synthesized via green method and was applied as adsorbent to remove of Reactive yellow 145 dye from aqueous solutions. Prepared MnOx- CeO2 was characterized by XRD (X-ray diffraction), XRF (X-ray fluorescence), FESEM (Field emission scanning electron microscopy), EDX (Energy-dispersive X-ray spectroscopy) and BET (Brunauer, Emmett and Teller). FESEM analysis was confirmed the nano structure of synthesized compound. Removal of Reactive yellow 145 dye experiments were designed by Response Surface Methodology (RSM) and was analyzed by ANOVA. In this research four main factors such as pH, contact time, initial dye concentration and dosage of adsorbent were investigated and maximum %R was obtained about 99.32%. The model predicated the interaction between initial dye concentration and adsorbent dosage was as the most effective factors. As data, removal of Reactive yellow 145 dye from aqueous solutions by synthesized MnOx/ CeO2 was obeyed Langmuir isotherm and pseudo-second order kinetic models.