التفاصيل البيبلوغرافية
| العنوان: |
Biodegradation of crude oil by a moderately haloalkaliphilic Acinetobacter strain. |
| المؤلفون: |
Qu, Shuang1 (AUTHOR), Liu, Lihong1 (AUTHOR), Zhang, Lei1 (AUTHOR), Zheng, Min2 (AUTHOR), Feng, Jinlai1 (AUTHOR), Liu, Chunshuang3 (AUTHOR), Miao, Yue1,4 (AUTHOR), Jing, Guolin5 (AUTHOR) |
| المصدر: |
Petroleum Science & Technology. 2023, Vol. 41 Issue 1, p30-44. 15p. |
| مصطلحات موضوعية: |
*PETROLEUM, *ACINETOBACTER, *BIODEGRADATION, *SOIL salinity, *OIL field brines, *HEAVY oil |
| مستخلص: |
Bioremediation of crude oil (or petroleum) pollution in the saline-alkali environment is challenging due to the lack of halotolerant and alkali tolerant oil-degrading bacteria. It is shown here that a newly isolated Acinetobacter strain D2 able to degrade crude oil was moderately haloalkaliphilic. Physiological characterization showed that the optimal crude oil degradation conditions for D2 strain occurred at pH = 9 and NaCl concentration of 2% w/v. Moreover, D2 can tolerate pH 11 and NaCl concentration of 8% w/v. Kinetic analysis indicated that crude oil (0.2% and 0.5% w/v) biodegradation by D2 followed the first-order kinetic model, with the k constant estimated as 0.089–0.111 d−1 and the half-life period of petroleum degradation as 6.24–7.79 d. The results of the gas chromatographic analysis revealed that strain D2 could degrade most saturated hydrocarbons, with higher removal efficiencies for shorter-chain alkanes. Strain D2 can also remove aromatic hydrocarbons with an average efficiency of 33.4%. Combined, these results demonstrated that a moderately haloalkaliphilic Acinetobacter strain can be a suitable candidate for bioremediation of oil-contaminated saline soil and oilfield produced water. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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