期刊
MARINE POLLUTION BULLETIN
卷 56, 期 10, 页码 1714-1718出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2008.07.007
关键词
Marine pollution; Nutrient; Oil degradation; Optimization; Response surface methodology; Rhodococcus erythropolis
资金
- Tianjin Natural Scientific Foundation, China [08JCYBJC03900]
A novel bacterium T7-2 was isolated from the oil-polluted sea-bed mud of Bohai Sea, northern China, which can degrade diesel oil at 15 degrees C. This bacterium was identified as a strain of Rhodococcus erythropolis according to its 16S rDNA gene. In order to enhance degradation efficiency, a five-level, three-factor central composite design was employed to optimize the nutrition supplied to artificial seawater. The results indicate that a supplement of 2.53 g (NH4)(2)SO4 L-1, 2.75 g Na2HPO4 L-1 and 0.01 g yeast extract L-1 to artificial seawater increases the degradation rate from 12.61% to 75% within 7 d. (C) 2008 Elsevier Ltd. All rights reserved.
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