Biodegradation of gaseous benzene with microbial consortium in a biofilter

摘要

The objective of this study was to investigate the biodegradation of gaseous benzene in a biofilter inoculated with benzene- oxidizing microorganisms. The biofilter performance was monitored in terms of benzene removal efficiency and carbon dioxide production. The biofilter was capable of achieving as much as 96/100 benzene removal efficiency at a residence time of 2 min and an inlet concentration of 220 ppm. During operation with an inlet benzene of 220 ppm. The maximum elimination capacity of the biofilter was 483 g of C_6H_6m~-3 day~-1. Under the same conditions, carbon dioxide with a concentration of up to 726 ppm was produced.