title: Biodegradation of nitrobenzene in a lysogeny broth medium by a novel halophilic bacterium Bacillus licheniformis.
abstract: The Bacillus licheniformis strain YX2, a novel nitrobenzene-degrading halophilic bacterium, was isolated from active sludge obtained from a pesticide factory. Strain YX2 can withstand highly acidic and alkaline conditions and high temperatures. Degradation of nitrobenzene (200mgL(-1)) by YX2 exceeded 70% after 72h in lysogeny broth medium (pH 4-9). Under optimal degradation conditions (33°C, pH 7 in LB medium) YX2 degraded 50, 100, 200, and 600mgL(-1) nitrobenzene within 36, 36, 72, and 156h, respectively. Even in the presence of benzene, phenol or aniline, strain YX2 efficiently degraded nitrobenzene. Furthermore, strain YX2 completely degraded 600mgL(-1) nitrobenzene in 7% NaCl (w/w). Thus, our data show that strain YX2 may have promise for removing nitrobenzene from complex wastewaters with high salinity and variable pH.
authors.affiliation: College of Plant Protection, Southwest University, Chongqing 400715, PR China.
authors.forename: Tian
authors.initials: T
authors.lastname: Li
authors.affiliation: College of Plant Protection, Southwest University, Chongqing 400715, PR China.
authors.forename: Xinping
authors.initials: X
authors.lastname: Deng
authors.affiliation: College of Plant Protection, Southwest University, Chongqing 400715, PR China. Electronic address: jjwang7008@yahoo.com.
authors.forename: Jinjun
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Resources and Environment, Southwest University, Chongqing 400715, PR China.
authors.forename: Yucheng
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Plant Protection, Southwest University, Chongqing 400715, PR China.
authors.forename: Lin
authors.initials: L
authors.lastname: He
authors.affiliation: School of Geography Sciences, Southwest University, Chongqing 400715, PR China.
authors.forename: Yuchuan
authors.initials: Y
authors.lastname: Sun
authors.affiliation: College of Plant Protection, Southwest University, Chongqing 400715, PR China.
authors.forename: Caixia
authors.initials: C
authors.lastname: Song
authors.affiliation: College of Resources and Environment, Southwest University, Chongqing 400715, PR China.
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Zhou
mesh_terms: D000814:Aniline Compounds; D001407:Bacillus / Q000302:isolation & purification / Q000378:metabolism*; D001419:Bacteria; D001673:Biodegradation, Environmental; D003470:Culture Media; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D009578:Nitrobenzenes / Q000378:metabolism*; D010636:Phenols; D054712:Salinity; D013696:Temperature
chemical_list: D000814:Aniline Compounds; D003470:Culture Media; D007220:Industrial Waste; D009578:Nitrobenzenes; D010636:Phenols; C036077:nitrobenzene; C023650:aniline
keywords: Bacillus licheniformis; Degradation; Lysogeny broth medium; Nitrobenzene; Salinity