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    Removal of Reactive Yellow 86 using TiO2 nanoparticle-colemanite waste
    (Journal of Chemical Engineering Research Studies, 2014) Eren, T.; Törün, H.; Yola, M. L.; Ertan, B.; Atar, N.
    A novel composite containingTiO2 nanoparticles (TiO2NPs) and colemanite waste (CW) was synthesized and tested in adsorption and photocatalysis to remove Reactive Yellow 86 (RY86) from aqueous solution. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction patterns (XRD) showed the formation of metal TiO2 NPs on CW. The BET surface area increased after intercalation of TiO2 NPs onto CW. TiO2 -CW was found to be a good nanomaterial for RY86 adsorption. The effects of operating variables such as initial dye concentration, pH and contact time in adsorption were studied. The kinetics, isotherm and thermodynamic parameters for the removal of the RY86 were also investigated. In addition, TiO2 -CW also shows high photocatalytic activity for degradation of RY86 from aqueous solution. The combination of adsorption and photocatalysis using TiO2 -CW is demonstrated as a more effective technique for removal of dyes from aqueous solution.