Screening of Efficient OiL-removing Microbial Strains for the Degradation of Petroleum Hydrocarbons
In this study,two microbial strains,G and H,were screened for efficient degradation of petroleum hydrocarbons in petroleum-contami-nated beach soils from Chongming Dongtan.The experiments showed that G,H and their combined(G+H)bacterial agents had significant degra-dation effects in different concentrations of petroleum-contaminated soils,and the G+H bacterial agent had the best performance in the middle concentration.The degradation of C6～C16 liquid petroleum hydrocarbons was stable and efficient,while the degradation of C17～C36 solid petrole-um hydrocarbons was significant at low concentrations,and the G bacterial agent was especially prominent.At the same time,it was found that soil dehydrogenase activity was closely related to the pollution concentration and the dosage of bacterial agent,and the activity was increased after adding bacterial agent in high concentration polluted soil,and G+H bacterial agent had the best effect in medium concentration polluted soil.This study provides effective strains and technical support for the ecological remediation of oiL-contaminated mudflats,and the combination and concen-tration of bacterial agents can be optimized in the future to enhance the degradation efficiency.
Petroleum ContaminationMicrobial StrainsDegradation of Petroleum HydrocarbonsEcological RemediationDehydrogenase Activity
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维普
