Combination of Adsorption on Activated Carbon and Oxidative Photocatalysis on TiO2 for Gaseous Toluene Remediation
نویسندگان
چکیده
The influence of activated carbon on the activity of TiO2 in toluene photooxidation was studied to verify the efficiency of both materials working ensemble. Results showed that surface pH and more strongly the surface area of activated carbon influence the TiO2 photoactivity. Results suggest that toluene adsorbed on carbon diffuses to TiO2 where photooxidation takes place. In conclusion, TiO2-activated carbon was able to perform the photooxidation of toluene for at least two consecutive runs more efficiently than TiO2 alone. Combination of adsorption on activated carbon and oxidative photocatalysis on TiO2 is a promising direction for removal of pollutant from air.
منابع مشابه
Photo catalytic removal of Toluene vapor from air in the Adsorption-Photo catalytic bed
Background and aims: Clean air is one of the most important components of health and sustainable development. Every person breathes about 10 kg of air per day and if it contains pollutants, it will have a serious impact on their health. Indoor air quality (IAQ) is one of the major health issues that have been addressed in recent years with changes in lifestyle patterns. Usually, due to the incr...
متن کاملPhotodegradation of Alachlor Over Fe - TiO 2 on Granular Activated Carbon Support under UV and Visible Light
Fe-TiO2 on granular activated carbon support was synthesized via hydrothermal method without calcination. The crystalline phases were identified using X-ray diffraction whereas the surface morphologies were examined using scanning electron microscopy. Peaks of anatase TiO2 and graphite were present in the Fe-TiO2-GAC sample. Comparisons of the surface features of GAC and Fe-TiO2-GAC show that F...
متن کاملModification of activated carbon by cold plasma and its effect on the adsorption of toluene
Abstract Background and aims: Clean air is one of the basic needs for human health and well-being. However, along with economic growth and development, transportation, urbanization and energy consumption have also risen and provide many concerns such as air pollution, which require urgent and wide attention. Air pollution in the worldwide is considered as a risk factor for human health and one...
متن کاملAdsorption and photocatalysis for methyl orange and Cd removal from wastewater using TiO2/sewage sludge-based activated carbon nanocomposites
Nanocomposite TiO2/ASS (TiO2 nanoparticle coated sewage sludge-based activated carbon) was synthesized by the sol-gel method. The changes in surface properties of the TiO2/ASS nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray fluorescence. The prepared TiO2/ASS nanocomposite was applied for simultaneous removal of methyl orange dye (MO) an...
متن کاملUsing Microwave Radiation to Recover Granular Activated Carbon Exposed to Toluene Vapor
This paper describes laboratory scale experiments examining the impact of microwave irradiation on the Granular Activated Carbon (GAC) exposed to toluene, a common organic vapor frequently released into work environment as well as outdoor. A stream containing 300 ppm toluene was supplied and passed through the granular activated carbon. The saturated adsorbent was placed in a quartz glass r...
متن کامل