Feasibility study carried out at the site prior to the full scale study showed that the introduced bacterial consortium effectively adapted to the local environment of the soil at bioremediation site. The soil samples were collected from the contaminated fields after treatment with bacterial consortium at different time intervals and analyzed by gas chromatography after extraction with hexane and toluene. At time zero (just before initiation of bioremediation), the concentration of total petroleum hydrocarbons in the soil (25-cm horizon) of plot A, B, C and D was 30.90 %, 18.80 %, 25.90 % and 29.90 % respectively, after 360 days of treatment with microbial consortia was reduced to 0.97 %, 1.0 %, 1.0 %, and 1.1 % respectively. Whereas, only 5 % degradation was observed in the control plot after 365 days (microbial consortium not applied).
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We are thankful to Dr. R.K. Pachauri, Director General, and Teri for providing the infrastructure to carry out the present study. Thanks to the management of Ahmedabad refinery (Oil and Natural gas Company) where the study has been carried out.
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Singh, B., Bhattacharya, A., Channashettar, V.A. et al. Biodegradation of Oil Spill by Petroleum Refineries Using Consortia of Novel Bacterial Strains. Bull Environ Contam Toxicol 89, 257–262 (2012). https://doi.org/10.1007/s00128-012-0668-x
- Novel bacterial strain