%0 Journal Article
%T Isolation, Identification and Degradation Characteristics of Oil Degrading Bacterial Strain
%A Yabin Zhan
%A Xingling Tao
%A Shanwen He
%A Shufen Song
%A Jingjing Xing
%A Fangmin Li
%A Tao Jiang
%A Lian Ma
%J Open Access Library Journal
%V 4
%N 10
%P 1-12
%@ 2333-9721
%D 2017
%I Open Access Library
%R 10.4236/oalib.1104016
%X
Objective: The aim of
study is to obtain a strain which can effectively degrade oil. Methods: By
enrichment, domestication and separation of culture from the sample which comes
from Qianjiang Guanghua Oilfield, the pure culture (G-40) was selected from the
medium supplemented with oil as the sole source of carbon. The G-40 was
preliminarily identified and classified by morphological observation,
physiological and biochemical determination and sequence analyses of 16S rDNA.
Effects of temperature, pH, oil concentration,
salt concentration, inoculation amount, N and P source on the degradation of the oil were
studied by single factor test. Meanwhile, the effects of temperature, pH, oil concentration and salt concentration were optimized
by orthogonal design. Result: G-40 was isolated and identified as Brevibacillus laterosporus. The orthogonal
design showed that the degradation rate of oil could reach 20.81%, 24.34% and
31.15% at 10 d, 20 d and 40 d under the optimal conditions which was 35¡æ,
initial pH 7.3, oil concentration 0.6%, salt concentration 0.5%, inoculum
amount 8%, the optimal N and P was (NH4)2SO4 and K2HPO4. Conclusion: This study provides microbial
resources for bioremediation of petroleum contaminated soil.
%K Degrading Bacteria
%K Brevibacillus Laterosporus
%K Oil Degrading
%U http://www.oalib.com/paper/5290644