期刊
MARINE POLLUTION BULLETIN
卷 89, 期 1-2, 页码 384-389出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.09.028
关键词
Nitrobenzene; Degradation; Salinity; Bacillus licheniformis; Lysogeny broth medium
资金
- Key Project of the National Eleventh-Five Year Research Program of China [2010 BAD031303]
- Natural Science Foundation of China [41371477]
- Fundamental Research Funds for the Central Universities [SWU113007]
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 (200 mg L-1) by YX2 exceeded 70% after 72 h in lysogeny broth medium (pH 4-9). Under optimal degradation conditions (33 degrees C, pH 7 in LB medium) YX2 degraded 50, 100, 200, and 600 mg L-1 nitrobenzene within 36, 36, 72, and 156 h, respectively. Even in the presence of benzene, phenol or aniline, strain YX2 efficiently degraded nitrobenzene. Furthermore, strain YX2 completely degraded 600 mg L-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. (C) 2014 Elsevier Ltd. All rights reserved.
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