Removal of polluting Phenol out of aqueous solutions with the aide of nanocomposites of TiO2/SBA-15 and using Response Surface Methodology

Phenolic compounds are one of the most important pollutants that poison water resources. Presence of phenol and its derivatives in water and wastewater is a major concern due to its toxic threat to human, animals and environment. Therefore, identifying and tracking these pollutants as well as identifying ways to control and eliminate them is very important in order to protect the environment, treatment of sewage and healthy drinking water supply. In this research, the main goal is to eliminate phenol from aqueous solution,with high initial density by Heterogeneous photocatalysis in the slurry reactor with the quality of Pyrex glass.

First,Response Surface Methodology was used for nanocatalystTiO with hydrogen peroxide and 250 watts UV radiation,to find optimum conditions for the removal of phenol from aqueous solution using heterogeneous photocatalysis.Then,SBA-15, which is highly capable of eliminating phenol due to its porous structure comparing to other absorbents, and then TiO /SBA-15 were synthesized. Finally, the structure and physical properties of Nano composite were detected by analysis XRD, BET, FESEM, and TEM.

Results of phenol elimination out of aqueous solutions by Heterogeneous photo catalyst and Phenol removal efficiency of 96% at a concentration of 100mg / l at the time of 420 minutes, respectively. Use of Response Surface Methodology to determine optimal conditions is one of the most effective methods to achieve the desired goal in this study.

According to the results, mesoporous materials containing TiO 2 compared with pureTiO 2 ,have high efficiency in photocatalytic degradation of water pollutants.