| Literature DB >> 23141841 |
Shuona Chen1, Hua Yin, Jinshao Ye, Hui Peng, Na Zhang, Baoyan He.
Abstract
Benzo[a]pyrene (BaP) biodegradation by Stenotrophomonas maltophilia was studied under the influence of co-existed Cu(II) ions. About 45% degradation was achieved within 3d when dealing with 1 mg L(-1) BaP under initial natural pH at 30 °C; degradation reached 48% in 2 d at 35 °C. Efficacy of BaP biodegradation reached the highest point at pH 4. In the presence of 10 mg L(-1) Cu(II) ions, the BaP removal ratio was 45% on 7th day, and maintained stable from 7 to 14 d at 30 °C under natural pH. The favorable temperature and pH for BaP removal was 25 °C and 6.0 respectively, when Cu(II) ions coexisted in the solutions. Experiments on cometabolism indicated that S. maltophilia performed best when sucrose was used as an additional carbon source. GC-MS analysis revealed that the five rings of BaP opened, producing compounds with one or two rings which were more bioavailable.Entities:
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Year: 2012 PMID： 23141841 DOI： 10.1016/j.chemosphere.2012.09.009
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086