Bychkov Alexsandr R. RussiaSaratov State Polytechnical University named after Gagarin Yu. A., 410054, Saratov, Polytechnical str., 77alexbychkov9756@gmail.com Author's articles Study of the Effectiveness of Using a Saprophytic Strain of Bacteria Bacillus pumilus for the Disposal of Xenobiotics of Hazard Class I–II