Abstract
ABSTRACTIn the present work, soil washing followed by ozone oxidation for remediation of phenanthrene (PHE) contaminated soils was investigated. The PHE removal efficiencies of TX-100 and Brij-35 at 3000 mg/L were 80.2% and 73.8%, respectively. In the ozone oxidation process, the oxygen supply rate was more rapid and the ozone concentration in the water rose quickly after 2 h. The degradation efficiencies for PHE, Brij-35, and TX-100 at 20 mg/L ozone concentration were 99%, 99%, and 45%, respectively. Our investigation suggests that coupling ozone oxidation with surfactant-enhanced soil washing is an effective method for removing hydrophobic compounds from soils.
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