Nurşen ALTUNTAŞ ÖZTAŞ, Demet ÖZER, Bilsen KURTTEKİN

Removal of Cr(VI) from wastewater through glycine assisted synthesis of TiO2

In this study, titanium dioxide was synthesized via solution combustion method. Titanium(IV) oxysulfatewas used as a titanium source. The fuel type, reaction time, and reaction temperature were tested for optimization.The glycine was set as a suitable fuel. Structural properties of the final product were characterized by p-XRD. Scanningelectron microscopy (SEM) and BET techniques were used to examine the morphology. The synthesized products werecompared to the commercial TiO2 and it was found that the titanium dioxide with the high surface area (63.628 m2/g)has been successfully synthesized by solution combustion method with time and energy saving. In the second part ofthe study, the adsorption efficiencies of synthesized titanium dioxide were tested, removal of Cr(VI) from wastewaterwas carried out. It was found that titanium dioxide obtained via solution combustion method has a better capacityfor Cr(VI) removal from wastewater than commercial titanium dioxide. In consequence, the chosen synthesis methodmodified the surface properties and improved the chromium adsorption capacity.

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