Abstract:

Polycyclic aromatic hydrocarbons (PAHs) due to a variety of anthropogenic activities are one class of toxic environmental pollutants that have accumulated in the soil environment and induced risk to human health and agriculture production. In the bioremediation of soil contaminated by PAHs, rhizosphere process plays an important role. In the paper, the status of PAHs in soil and the toxicity induced by the accumulation of PAHs is reviewed. The effects of soil environment on the rhizosphere biodegradation and the mechanism of PAHs degradation are introduced in details and the bioremediation can be enhanced by increased the bioavailability of PAHs in soil. Finally, it is forecasted the trends of PAHs biodegradation in rhizosphere soil.