[Combined remediation of polycyclic aromatic hydrocarbons (PAHs) by plant and immobilized bacteria in contaminated soil].

In this study, three dominant bacteria (Ⅰ), (Ⅱ), (Ⅲ) from Fire Phoenix rhizosphere soil were used to develop a multi-microbial agent system. For oil-contaminated soil in the Dagang oilfield, the immobilized test bacteria were inoculated into the Fire Phoenix rhizosphere soil to examine the effects of bacterial agents on polycyclic aromatic hydrocarbons (PAHs)-contaminated soil. The results showed that PAHs degradation was promoted under the ⅠⅢ (with an effective number of viable bacteria of 10 cfu·mL) and ⅠⅡⅢ (with an effective number of viable bacteria of 10 cfu·mL) treatments.