BIOPREPARATION FOR PURIFICATION OF SOIL POLLUTED BY OIL AND OIL PRODUCTS Russian patent published in 2017 - IPC B09C1/10 

FIELD: biotechnology.

SUBSTANCE: biopreparation is made in dry form and includes a water-soluble protective medium and microorganisms - petroleum hydrocarbon destructors containing bacteria of the Rhodococcus genus, the biopreparation contains a strain of Rhodococcus jialingie 1kp, and a strain of Lysinibacillus xylanilyticus 5 rb, and a Yarrowia lipolytica 2kp yeast strain as a bacterium of the Rhodococcus genus. The dried microorganisms in the biopreparation are taken in the following mass ratio: Rhodococcus jialingie 1k:Lysinibacillus xylanilyticus 5 rb:Yarrowia lipolytica 2kp=(1-2):(1-1.5):(2-3), and the protective medium contains dehydrated yeast autolyzate, glucose and nutrient mineral salts and microelements that contain at least nitrogen, phosphorus, potassium, magnesium, manganese, zinc and iron compounds, which are taken in the mass ratio of dehydrated yeast autolysate:glucose:nutrient minerals and trace elements = (1-2):(0.5-1):(1-2).

EFFECT: speed of soil purification from hydrocarbon pollution is increased by 5 times.

1 tbl, 13 ex