Home – Home – Jornals – Chemistry for Sustainable Development 2017 number 5

The paper presents the results of tar biochemical oxidation of Novokuybyshevsk Refinery with high contents of heteroelements in a model of the soil system. The microorganism population is restored to the initial level, and then increases in 20-30 times on the 4-5th day after pollution, as demonstrated. Enzyme activity of polluted soil increases in 1.5-1.8 times, which attests to an increase in oxygenase activity of microorganisms and consequently assimilation of different hydrocarbon compounds (HC). The formation and accumulation of incomplete HC oxidation products happens, as determined during biodegradation of tar components. The disposal of the studied oil product was 50 % of initial pollution on the 180th day of the experiment, as established. Native soil microflora is able to mineralization of almost all HC that are a part of the HC composition, as established by the GC/MS method. High molecular mass heteroatom tar components are also subjected to microbial degradation, as demonstrated. The structure of these species undergoes profound changes during degradation.