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...
Published in: | Canadian Journal of Microbiology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1978
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/m78-044 http://www.nrcresearchpress.com/doi/pdf/10.1139/m78-044 |
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. |
---|