Experimental study of the degradation of volatile organic compounds by photocatalytic oxidation using TiO2 pellets

A fixed bed photocatalytic reactor has been designed and built with a UV
radiation source. Ti02 pellets were placed on the three fixed beds within the
reactor. Acetone was used as an indicator of volatile organic compounds (VOCs) during the experiment. Under the flow rate of 12.75 l/min, the oxidation efficiencies were obtained at four different concentrations of acetone laden gas streams ranged from 40ppm to 250ppm. It was found that the lower the acetone concentration of the untreated inlet gas, the higher the oxidation efficiency; the obtained oxidation efficiency was in the range of 40-70% for various concentrations of untreated gases.