The biodegradation of 1,3-dichlorobenzene by an adapted strain Bacillus cereus PF-11 derived from town-gas industrial effluent.
In the present study, an adapted bacterium PF-11 with high 1,3-dichlorobenzene degradation capability was isolated from town-gas industrial effluent through continuous introducing of N-methyl-N'-nitro-N-nitrosoquanidine (NTG). In suitable condition, a degradation rate of 32 mg L(-1) d(-1) of 1,3-dichlorobenzene was obtained by strain PF-11 with effective chlorion release. Strain PF-11 was tentatively identified as gram-positive Bacillus cereus. The substrate specificity of the strain PF-11 was relatively low, and the degradation rate for different chlorobenzenes was in the order of monochlorobenzene > 1,3-dichlorobenzene > 1,2-dichlorobenzene. Initial oxidation step was molecular oxygen attacking chlorobenzene ring catalyzed by dioxygenase.
Wang
L
L
School of Life Sciences, Fudan University, Shanghai, China. 9900170r@polyu.edu.hk
Zhou
Q
Q
Zhang
B S
BS
Li
Z L
ZL
Chua
H
H
Ren
D M
DM
D000222:Adaptation, Physiological; D001409:Bacillus cereus / Q000201:enzymology*; D002722:Chlorobenzenes / Q000378:metabolism*; D004785:Environmental Pollutants / Q000378:metabolism*; D007220:Industrial Waste; D010084:Oxidation-Reduction
D002722:Chlorobenzenes; D004785:Environmental Pollutants; D007220:Industrial Waste; C042146:1,3-dichlorobenzene