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EFFICACY OF COMMERCIAL INOCULA IN ENHANCING BIODEGRADATION OF WEATHERED CRUDE OIL CONTAMINATING A PRINCE WILLIAM SOUND BEACH
Venosa*, A D., J. R. Haines, AND D. M. Allen. EFFICACY OF COMMERCIAL INOCULA IN ENHANCING BIODEGRADATION OF WEATHERED CRUDE OIL CONTAMINATING A PRINCE WILLIAM SOUND BEACH . A. I. Laskin (ed.), Journal of Industrial Microbiology. Springer-Verlag, BERLIN-HEIDELBERG, Germany, 10(1):1-11, (1992).
To evaluate the effectiveness of 10 commercial products in stimulating enhanced biodegradation of Alaska North Slope crude oil.
In a laboratory study evaluating the effectiveness of 10 commercial products in stimulating enhanced biodegradation of Alaska North Slope crude oil, two of the products provided significantly greater alkane degradation in closed flasks than indigenous Alaskan bacterial populations supplied only with excess nutrients. These two products, which were microbial in nature, were then taken to a Prince William Sound beach to determine if similar enhancements were achieveable in the field. A randomized complete block experiment was designed in which four small plots consisting of a no-nutrient control, a mineral nutrient plot, and two plots receiving mineral nutrients plus the two products were laid out in random order on a beach in Prince William Sound that had been contaminated 16 months earlier from the Exxon Valdez spill. These four plots comprised a 'block' of treatments, each oil residue weight and alkane hydrocarbon profile changes. The results indicated no significant differences (p<0.05) among the four treatments in the 27-day time period of the experiment. A statistical power analysis, however, revealed that the variability in the data prevented a firm conclusion in this regard. Failure to detect significant differences was attributed not only to variability in the data but also to the highly weathered nature of the oil and the lack of sufficient time for biodegradation to take place.
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Efficacy of Commercial Inocula in Enhancing Biodegradation, etc Exit