Efficacy of in-situ ozonation for the remediation of PAH contaminated soils

摘要

Polycyclic aromatic hydrocarbons (PAHs) are of environmental concern because many PAHs are either carcinogens or potential carcinogens. Petroleum products are a major source of PAHs. The occurrence of PAH contamination is widespread and novel treatment technologies for the remediation of contaminated soils are necessary. Ozone has been found to be extremely useful for the degradation of PAHs in soils. For these compounds, the reaction with molecular ozone appears to be the more important degradation pathway. Greater than 95/100 removal of phenanthrene was achieved with an ozonation time of 2.3 h at an ozone flux of 250 mg h~(-1).