Back to Search
Start Over
Biodegradation of crude oil by a moderately haloalkaliphilic Acinetobacter strain.
- Source :
-
Petroleum Science & Technology . 2023, Vol. 41 Issue 1, p30-44. 15p. - Publication Year :
- 2023
-
Abstract
- 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 0.089ā0.111 dā1 and the half-life period of petroleum degradation as 6.24ā7.79 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]
- Subjects :
- *PETROLEUM
*ACINETOBACTER
*BIODEGRADATION
*SOIL salinity
*OIL field brines
*HEAVY oil
Subjects
Details
- Language :
- English
- ISSN :
- 10916466
- Volume :
- 41
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Petroleum Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 160508867
- Full Text :
- https://doi.org/10.1080/10916466.2022.2041666