Bania A. The role of biosurfactants in phytoremediation of oil-contaminated soils and dumps of coal mines

The thesis is devoted to the study of the biosurfactants influence on the growth and indices of oxidative stress of plants, that grown on oil-contaminated soils and substrates of rock dumps of coal mines, as well as determining of biosurfactants efficiency in phytoremediation of oil polluted soils and coal mine dumps. The microbial preparation based on autochthonous microorganisms isolated from contaminated soil, biocide-ethiltiosulfanilate and a chemical oxidant (CaO2) were also used for the remediation of oil-contaminated soils. Nowadays the problem of environmental pollution with wastes of oil and mining industry has acquired a global nature, therefore effective, economically and environmentally beneficial purification technologies are needed for its solution. The biotechnological methods using plants and microorganisms are prioritive among such technologies. The selection of effective activators, which increase the plants resistance to unfavorable conditions, as well as the use of general action of microorganisms with plants for enhance of remediation are actual task. The biodegradable, low-toxic biosurfactants deserve special attention as remediation activators due to their physico-chemical and biological properties (surface activity, solubilization, effect on cell membranes of plants and microorganisms, pollutants bioavailability).