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

Subject Areas : Water and Environment

Samira Khodabakhsh ¹ , Lobat Taghavi ² , Ebrahim Alaie ³ , Leila Samiee ⁴

1 - M.Sc. in Environmental Science, Department of Environmental Science, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2 - Associate Professor, Department of Environmental Science, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran , Iran. * (Corresponding Author)
3 - Head of the Department of Biotechnology and Environment, Research Institute of Petroleum Industry, Tehran, Iran.
4 - Project Manager in Campus Energy and Environmental Research and Development, Research Institute of Petroleum Industry,Tehran,Iran.

Received: 2017-04-23 Accepted : 2017-06-07 Published : 2020-12-21

Keywords: Tio2/SBA-15Nanocomposite, Phenol, Response Surface Methodology, Heterogeneous Photocatalysis,

Abstract :

Background and Objective: 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.Method: First,Response Surface Methodology was used for nanocatalystTiO2with 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 TiO2/SBA-15 were synthesized. Finally, the structure and physical properties of Nano composite were detected by analysis XRD, BET, FESEM, and TEM. Findings: 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.Discussion and Conclusion: According to the results, mesoporous materials containing TiO2 compared with pureTiO2,have high efficiency in photocatalytic degradation of water pollutants.

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