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The article deals with the issues of environment purification from oil and oil products. In particular, data on the technology of re-cultivation of soils contaminated with heavy fractions of oil by reagent encapsulation method are given. The main aim of the work was to search for effective polymers in the composition of the encapsulated material based on quicklime and industrial fat, which provides a high degree of carbonization of contaminated soils. M-100 grade fuel oil was chosen as the heavy fraction. The polymers: carboxymethylcellulose, sodium alginate, xanthan gum, and polyphepan – were investigated. In the course of the studies, it was found that the most durable granules with increased water resistance and low toxicity are formed when using carboxymethylcellulose.