CRISTIANA DUMITRAN, ION ONUTU, FLORINEL DINU<br>Extraction of Hydrophobic Organic Compounds <br>from Soils Contaminated with Crude Oil

CRISTIANA DUMITRAN, ION ONUTU, FLORINEL DINU
Extraction of Hydrophobic Organic Compounds
from Soils Contaminated with Crude Oil

Abstract:

The paper presents the results of the study regarding the influence of some factors over the extraction with solvents of hydrophobic organic compounds from soil (Kow] 10), from accidental oil leaks. Hydrocarbons was quantified by a gravimetric method, using different solvents (trichlorethylene, petroleum ether and hexane) on contaminated soil samples with different crude oils in terms of chemical composition. To indicate the influence of soil moisture on the extraction of TPH (total petroleum hydrocarbons), the results from dry soil samples were compared with those of wet samples. The results give a wide range of values for TPH concentration, influenced by the type of solvent, crude oil type which infested the area and the soil moisture. Regardless of the type of solvent used in the saturated crude oil contaminated soil, the extraction of hydrocarbons is higher for dry soil samples, and in case of aromatic crude oil contaminated soil, the extraction is higher for the wet soil samples. From all solvents, trichlorethylene extracted the greatest amount of oil regardless of the type of oil that has infested the area and regardless of soil condition (dry, wet). This solvent can be recommended for the extraction of hydrocarbons from oil leaks with a high percentage of aromatic hydrocarbons. Keywords: total petroleum hydrocarbons, sorbent, hydrophobic organic compound, contaminated soil

Issue: 2009, Volume 60, Issue 11

Pages:

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