The Removal of Benzene in Wasted Air by Biofiltration Process

Abstract

This research work is related to the removal benzene by the mean of biofiltration. In the biofiltraion experiment. Granulated activated carbon (GAC) can be used as supporting medium for the bacteria Pseudomonas putida. DMST4075 which was refered to as biofilter. The performance of biofilter is effected by inlet  concentration of  benzene contaminated in the air, by decreasing inlet concentration of benzene contaminated in air from 100 ppm. To 50 ppm. Had shown an increase in the per floe rate of 220 cc/min. at residence time of 5.552 second. Moreover, the performance of biofilter not only depends on the inlet concentration of benzene contaminated in air but also depends on the benzene residence time. As the performance of biofilter to criminate benzene in air increased from 35% to more than 99% at constant inlet concentration of benzene contaminated in the air at 50 ppm residence time was also increased from 5.552 second to 46.977 second. These results shown that, infiltration technique performance depends on the effect of air flow rate (or residence time) rather than that effect by the inlet concentration of benzene contaminated in air