In situ degradation of oil in a soil of the boreal region of the Northwest Territories

Replicate field plots comprising a control: control plus oil: control plus oil and fertilizer (urea phosphate. 27:27:0); control plus oil and bacteria: and control plus oil, fertilizer, and bacteria were established at Norman Wells, N.W.T., Canada. Plots were monitored over a 3-year period for chang...

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Bibliographic Details
Published in:Canadian Journal of Microbiology
Main Authors: Westlake, D. W. S., Jobson, A. M., Cook, F. D.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1978
Subjects:
Genetics
Molecular Biology
Applied Microbiology and Biotechnology
General Medicine
Immunology
Microbiology
Northwest Territories
Canada
Norman Wells
Cotton-grass
Online Access:http://dx.doi.org/10.1139/m78-044
http://www.nrcresearchpress.com/doi/pdf/10.1139/m78-044
Description
Summary:Replicate field plots comprising a control: control plus oil: control plus oil and fertilizer (urea phosphate. 27:27:0); control plus oil and bacteria: and control plus oil, fertilizer, and bacteria were established at Norman Wells, N.W.T., Canada. Plots were monitored over a 3-year period for changes in microbial numbers and the chemical composition of recovered oil. Where fertilizer was applied, there was a rapid increase in bacterial numbers, but no increase in fungal propagules. This was followed by a rapid disappearance of n-alkanes, isoprenoids, and a continuous loss in weight of saturate compounds in recovered oil. Changes in the content of asphaltenes, aromatics, and nitrogen-, sulphur-, and oxygen-containing fractions also are discussed. The seeding of oil-soaked plots with oil-degrading bacteria did not have any effect on the composition of recovered oil. Fertilized plots showed a more rapid rate of vegetation with cotton grass and Labrador tea being the dominant species in revegetation.

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