REMOVAL OF BENZENE AND ETHYLENE AS ODOR COMPOUNDS

摘要

The main objective of this study was to investigate the biodegradation of gaseous benzene andethylene in biofilters filled with granular activated carbon. In addition, calculations of themaximum elimination capacity and carbon mass balance were investigated. As results of study,the benzene biofilter was capable of achieving benzene removal efficiency as much as 96% at aresidence time of 2 min and an inlet concentration of 220 ppm. During operation with an inletbenzene of 220 ppm, the maximum elimination capacity of the biofilter was 483 g of C6H6 m-3day-1. The ethylene biofilter was capable of achieving ethylene removal efficiency as much as100% at a residence time of 14 min and an inlet concentration of 290 ppm. During operationwith an inlet ethylene of 290 ppm, the maximum elimination capacity of the biofilter was 34 gof C2H4 m-3 day-1. For the removal of mixed compounds, about 5296% of ethylene wasdegraded at residence times of 210 min, whereas complete removal of benzene was obtained.The biofilter could provide an attractive treatment technology for removing individual andmixed benzene and ethylene.