Screening of an Effective Nitrobenzene Degrading Strain and Its Biodegradation Characteristics

This paper reported on screening a strain for effectively degrading nitrobenzene, which was isolated from the activated sludge from a chemical factory and tentatively identified as Acinetobacter species. Based on the experiment, the optimum conditions for degradation of nitrobenzene were:25～35℃,pH7～8 and at least 120 r/m of shake speed. The experimental result showed under favorable conditions the strain's complete degradation of nitrobenzene with the initial concentration below 400 mg/L. It also showed that nitrobenzene concentrations of more than 400 mg/L inhibited growth of the bacteria.