Dye Degradation by Anatase Coated on Meta-kaolin Support

Photocatalytic process is one of the best methods for degradation of organic pollutants from wastewater. The separation of photocatalyst from the treated wastewater is of great importance from engineering point of view. In this article, the anatase synthesized by sol-gel method was coated on meta-kaolin support through the polymeric binders. The photocatalytic activity of fabricated packed beds was evaluated by degradation of wastewater contaminated by methylene blue under solar irradiation using UV-Vis spectroscopy. Two polymeric binders employed to coat titanium dioxide on extruded ceramic supports. Moreover, the dye degradation kinetics in the presence of packed beds and anatase powder were studied to understand the role of support on wastewater treatment. The structure of support was identified by XRD and FESEM before and after photocatalyst coating. The obtained results showed that the 3-(Aminopropyl) triethoxysilane is favorable to be applied as a binder in comparison to methacrylic acid. Approximately, 65% of methylene blue is degraded during 60 minutes.