Control of Biological Treatment of Disturbed Lands of Cryolithozone at Oil Spills

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Glyaznetsova, Yu S, Zueva, I N, Chalaya, O N
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2019
• Subjects: Sakha; permafrost; Yakutia
• Online Access: http://dx.doi.org/10.1088/1755-1315/272/2/022106; https://iopscience.iop.org/article/10.1088/1755-1315/272/2/022106/pdf; https://iopscience.iop.org/article/10.1088/1755-1315/272/2/022106

Abstract The paper presents the results of geochemical research on the effectiveness of biological treatment of oil-contaminated permafrost soils in the conditions of the Far North (Republic Sakha (Yakutia)). On base of the complex of physics-chemical methods analysis, the comparison study of transformation features of oil contamination was made at the experimental site with application of biological preparation on the base of native strains of hydrocarbon-oxidizing microorganisms and at the control site without application of preparation. At the experimental site over 10 years’ monitoring the significant changes were observed such as a content of residual oil content as in composition of oil contamination. A content of resins and asphaltenes increased as hydrocarbons decreased, in the chemical structure the amount of oxygen groups and bonds increased. Degree of destruction averaged 95%. At the same time, the level of pollution remained high. Thus, a single treatment of soils with biological preparation wasn’t enough to completely remediation soils. At the control site, the same direction of changes was observed with a lower rate of degradation. Degree of destruction was only 35%.Obtained positive results can be used for remedia works in territories contaminated by spills of oil and oil products.