CHEMINĖS EKSTRAKCIJOS METODO TAIKYMAS NAFTOS PRODUKTU UŽTERŠTAM DIRVOŽEMIUI VALYTI.

The article analyzes the ways of the access of oil into the soil and the possible ways of soil treatment that allow the removal of oil and its products from the soil matrix. The extraction method is one of the most effective ways to treat soil contaminated by oil products ex-situ, which is why the cost of cleaning is higher than the in-situ method, because ex-situ exhausting requires the soil to crop, transport, store, etc., of the contaminated layer. Despite the higher cost of ex-situ cleaning, the efficiency of cleaning is higher and the time taken to remove oil from the soil is shorter. Lithuania did not apply the extraction method to clean soil contaminated with petroleum products (NP), although the method has a rather high efficiency. The article analyzes the dependence of extraction efficiency of oil product (motor oil) on extraction time, extraction solvent type, NP concentration and extraction solvent content. [ABSTRACT FROM AUTHOR]