BIODEGRADATION OF PETROLEUM REFINERY SLUDGE

摘要

Petroleum refining unavoidably generates considerable volumes of oily sludge during oil production and processing activities. Petroleum sludge comprises of alkanes, polycyclic aromatic hydrocarbons (PAH), heavy metals, organic acids and other hydrophobic organic carbon compounds. Total petroleum hydrocarbons (TPH) are primarily composed of alkanes, aromatics, nitrogen-, sulfur-, and oxygen- (NSO)-containing compounds, and asphaltene fractions (1). TPH are the most deleterious components in oily sludge, because of their potential hazard to human health and the enviromnent. Improper disposal of oily sludge leads to environmental pollution, particularly soil contamination, and poses a serious threat to groundwater.