Abstract: Crude oil leakage and crude oil polluted saline soil problems are becoming more and more serious.Microbial activity is inhibited under high-concentration crude oil and high-salt conditions,resulting in inapplicability of bioremediation technology.A high-efficiency crude oil degrading bacterium TG-1 is isolated from crude oil contaminated soil in Liaohe Oilfield,China,which is identified as Rhodococcus sp.Degradation rate of the strain to crude oil with a concentration of 6% by mass in the inorganic salt medium is as high as 95.6%.Degradation rates of linear alkanes,pristane and phytane by it all exceed 90%.Degradation rate of crude oil exceeds 65% at a salt concentration of 1%-6% (10-60 g·L-1).For the soil containing 3% and 5% of crude oil,degradation rates of crude oil by TG-1 strain can reach 79.3% and 60.7%,respectively within 15 days.It is shown that TG-1 strain exhibits good salt tolerance and high degradation efficiency to crude oil,and has the potential to repair crude oil contaminated saline soil.
乔悦, 常世辉, 李晓涵, 王舒岚, 李大卉, 黄磊. 一株高效原油降解菌的分离鉴定和降解特性研究[J]. 现代化工, 2021, 41(3): 120-124,129.
QIAO Yue, CHANG Shi-hui, LI Xiao-han, WANG Shu-lan, LI Da-hui, HUANG Lei. Isolation,identification and degradation characteristics of an efficient crude oil degrading bacterium. Modern Chemical Industry, 2021, 41(3): 120-124,129.
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