Used for remediation of areas polluted with oil and oil products. Available as a liquid or liophylized form. Involves bacteria of Mycobacteriinn tiavescens (M.fl.) EX strain. In the liquid form the count of bacteria remains to be 1x10⁸ cells/ml for 30 days with 1% glucose added and for 3 months with oil (0.5%) added.

Cell density of the dry preparation is 2x10¹¹ cells/g. Cells decrease in number by only an order for two years when kept at 4°C. Its oil-oxidizing activity varies slightly.

M-fl.-based preparation possesses oil-oxidizing and bioemulsifying activities. It is highly active at both 28°and 20^oC. Kerosene is the most biodegradable product. Biodegradations of kerosene are similar at 10° and 28⁰C, being 81% and 89% , respectively.

With the temperature lowered, biodegradation falls from 77% to 45% in Diesel fuel, from 55% to 23% in residual oil and from 74% to 30% in crude oil.

The cell count remains to be 1x10⁵ cells /g for 4 in soil treatment.

The product has been trailed for treatment of oil spills at Zhymovsky plant as well as at a nuclear power station in Zaporozhskaya region.

Ermolenko Z.M.

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