Abstract:

By pot culture, Study on Removal Efficiency of phenanthrene and pyrene in soil by sudan grass, and the correlation between phenanthrene and pyrene residual quantity and the polyphenol oxidase and urease activity. The results showed that in the Philippines, pyrene removal, plant - micro-organisms joint repair play a major role on the removal of phenanthrene and pyrene, after 50d pot culture experiment, the removal rates respectively reached 68.9% and 71.24%; the correlation analysis on enzyme activity and phenanthrene and pyrene residue residual quantity concludes that when the enzyme activity is high, the Philippines and pyrene removal was also higher; cultivation of plants can increase the activity of microbial enzymes, thus enhance phenanthrene and pyrene removal rate, respectively higher than the non-plant processing 51.7%, and 55.54 %. The result shows that plant - microorganism combined bioremediation can be used as a primary means of polycyclic aromatic hydrocarbons remediation, and soil urease activity can also be used as a indicator of the soil phenanthrene and pyrene pollution eco-toxicological.