Abstract
In this research the adsorption of Vat Brown 16 Dye on ZnO and Nano-ZnO particles were investigated, the effect of changing the contact times, the effect of changing the initial concentrations of the dye were applied, The adsorption kinetics of dye studied and found that the reaction was ( Pseudo-second order), the effect of changing the temperatures studied to apply the adsorption isotherms ( Langmuir and freundlich) models which are calculated the isotherm constants to calculate the thermodynamic parameters ( ?H, ?G and ?S). The negative values of ?H indicate that the adsorption of Vat Brown16 Dye on ZnO and Nano-ZnO was exothermic, the positive values of ?S reflects good affinity of Vat Brown16 Dye towards ZnO and Nano-ZnO. The results have established good potentiality for Nano-ZnO particles to remove the polutant dye from the water better than ZnO particles.
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