Journal
PETROLEUM SCIENCE AND TECHNOLOGY
Volume 33, Issue 6, Pages 717-723Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10916466.2014.954670
Keywords
biodegradation; strain; contaminated soil; crude oil; bioremediation
Funding
- China National Petroleum Corporation [2011D-4605-0101]
- National Natural Science Foundation of China [51209216, 21306229]
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A laboratory study was undertaken to bioremediation crude oil contaminated soil by isolated strains. Pseudomonas strain A as the most superior indigenous biodegrader was selected. At the optimal growth condition of pH 7 and with 5 g/L NaCl, cosubstrate alpha-lactose, and inorganic salt FeSO4, 82.3% of crude oil degradation efficiency was obtained. Furthermore, characteristics of chemical composition during the biotreatment indicated that saturation hydrocarbons and some aromatics were effectively removed by strain A. N-alkane in crude oil was preferentially degraded, especially those in the range of nC(16)-nC(24). Biodegradation of aromatics depended on benzene ring numbers and complexity of structures.
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