Abstract
Photosensitized degradation of phenanthrene and pyrene using humic acid (HA) was applied for remediation of PAHs. The desired dosages of HA (0, 10, 20, 30, and 40 mg kg−1) were added into the PAHs contaminated soil, and soil samples were randomly located in photodegradation chamber under the UV lamps for 25 h. The results suggested that the photosensitized degradation of phenanthrene and pyrene obeyed the pseudo-first-order kinetics. Moreover, the increased concentration of O2, H2O2 and light intensity enhanced the fast degradation of phenanthrene and pyrene. All the results disclosed that HA-assisted photosensitized degradation of PAHs was an available choice for remediation of PAHs polluted soil in the practice.
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