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COMPARATIVE EVALUATION OF THE EFFICIENCY OF BIOLOGICAL PRODUCTS FOR CLEANING-UP OF THE CASPIAN COAST SOILS POLLUTED WITH OIL PRODUCTS
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| Author:
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A.B. SUYUNOVA, V.D. ?ONWAY
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| Abstract:
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The capacity of Bioden, EkoBak, Petro Treat oil-oxidizing bioproducts for degradation of gasoline, oil, diesel fuel, fuel oil and engine oil at 7% and 15% pollution levels of different types of soils (dark chestnut, solonchaks, sand) has been investigated in vitro. It has been found that in the presence of bioproducts the degradation of oil and oil products increases on average 1.8-4.1 times, and in this context, it depends on the type of pollutant concentrations and the soil type. When cleaning the studied soils from oil, the Bioden preparation surpasses the Ecobac and Petro Treat preparations in speed and destruction effectiveness. When cleaning the soils from pollution with diesel fuel, fuel oil and engine oil, the Petro Treat preparation surpasses the Ecobak and Bioden in speed and destruction effectiveness. After 60 days, the destruction of oil by bioproducts averaged 60.5-97.8%, diesel fuel - 68.8-92.7%. While the heavy fractions of hydrocarbons in petroleum products increase, the speed and efficiency of degradation with bioproduct decrease. After 120 days, the destruction of fuel oil by bioproducts was 46.6-61.1%; of spent engine oil –24.8-34.9%; and destruction of non-spent engine oil was 1.1-10.9% after 90 days of cleaning. The series of petroleum hydrocarbons’ destruction by bioproducts in the descending order, depending on the type of pollutant and soil, were distributed as follows: oil - solonchaks>sand>dark chestnut soil; diesel fuel: sand>solonchaks>dark chestnut soil; fuel oil - dark chestnut soil>sand>solonchaks; and spent engine oil - solonchaks>dark chestnut>sand.
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| Keyword:
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oil, diesel fuel, fuel oil, engine oil, oil pollution of soil, biodegradation, oil-oxidizing microorganisms, bioproduct, hydrocarbons (HC).
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| EOI:
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| DOI:
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https://doi.org/10.31838/ijpr/2018.10.04.140
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| Download:
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