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Bioremediation Possibilities of Oil-Contaminated Soil by Biosurfactant Based on Bacillus Strain

Nedoroda Vladyslav, Trokhymenko Ganna, Magas Nataliya

Journal of Ecological Engineering

2022

Vol. 23, nr 8

49--55

This paper represents the results of the investigation of soil phytotoxicity with a high level of oil pollution. The artificially contaminated soils were exposed to an oil-destroying biosurfactant based on the strains of Bacillus amyloliquefaciens and Bacillus subtilis. The main objective of the work was to evaluate the effectiveness of a consortium of microorganisms in reducing the phytotoxicity of soils with high levels of oil contamination. The determination was performed on the reactions of test organisms to the pollution of the soil environment. The test system in the experiment comprised Sorghum bicolor subsp. Drummondii, Phleum pretense, Galéga officinális, Trifolium pretense, Medicágo sativa, and Sinapis arvensis. The variety of the applied indicator plants has provided a comprehensive analysis of the results of oil destruction and allowed an assessment of the sensitivity of the seeds of each species to toxic substances.

Analysis of Petroleum Biodegradation by a Bacterial Consortium of Bacillus amyloliquefaciens ssp. Plantarum and Bacillus subtilis

Nedoroda Vladyslav, Trokhymenko Ganna, Khrapko Taras, Koliehova Anastasiia

Journal of Ecological Engineering

2021

Vol. 22, nr 11

36--42

Features of change of phytotoxic influence of the soil polluted with oil at the use of a complex biological product based on strains of microorganisms Bacillus amyloliquefaciens subsp. plantarum NSh-2 and Bacillus subtilis NSh-4 in the laboratory were investigated. The level of destruction of petroleum hydrocarbons at different combinations of pollutant and biological product concentrations was determined, as well as in the absence of oil pollution to ensure the assessment of the biological product’s impact on the environment. Soil phytotoxicity was assessed by the method of biotesting using radish seeds of the Sora variety by the ratio of seedling height and the obtained mass of organic matter.