Abstract
The soil slurry reactor was investigated as an alternative technology for removal of the oily material from the soil. The experiments revealed that significant reduction of the crude oil components can be achieved if favorable conditions, e.g., temperature, oxygen, and nutrients, are ensured for the degradation processes. The degradation of the oily material was followed by different analytical techniques. In addition to the analysis of the total extractable matter (TEM), chemical oxygen demand (COD), and nutrients, individual alkanes (including the isoprenoid alkanes, pristane and phytane) and polyaromatic hydrocarbons (PAHs) were determined to characterize the degradation process. It was concluded that the slurry reactor can be an effective technology to reduce the TEM in the soil. Aliphatic hydrocarbons biodegraded within 5 to 10 d, whereas four- and more-ring PAHs were present in the slurry even after 40 d.
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