土壤石油高效降解菌的筛

发布时间：2019-03-27 15:10

【摘要】：从华中某油田石油污染土壤中分离筛选出了3株高效石油降解菌S-4、S-5和S-7,在30℃,200 r/min恒温摇床上震荡培养14 d后,石油烃降解率分别为41.60%、40.59%和43.53%。经16S r DNA基因序列鉴定,S-4、S-5和S-7分别属于肠杆菌属(Enterobacter)、假单胞菌属(Pseudomonas)和Kosakonia属。通过实验表明,菌株的最适降解pH为7,最佳氮源为硝酸铵(NH4NO3),最佳氮、磷比为5:1,在添加营养元素的条件下,经过48 d的降解,S-4、S-5和S-7菌株对土壤中石油烃总降解率分别为74.24%、71.66%和80.29%。
[Abstract]:Three highly efficient petroleum-degrading bacteria were isolated and screened from a petroleum-contaminated soil in a central China oilfield. The degradation rates of petroleum hydrocarbons were 41.60% at 30 鈩，

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