Enhancement of phenol biodegradation by Ochrobactrum sp isolated from industrial wastewaters

Ochrobactrum sp., was tested with regard to its phenol degradation capacity at different pH levels, and with different carbon sources (mineral salt medium with glucose (MSG) and the same medium with 0.5%, 1%, and 2% (v/v) molasses (MSM)) and phenol concentrations. The highest degradation was in mineral salt medium with 1% (v/v) molasses (45.9%), while degradation was 21.1% in mineral salt medium with 5 gl(-1) glucose. These data show that the addition of molasses to mineral salt medium enhanced phenol degradation by Ochrobactrum sp. The bacterium can be used effectively to treat wastewaters containing phenol. (C) 2009 Elsevier Ltd. All rights reserved.