Abstract:

By taking p-xylene as the only carbon source and energy, one bacterial strain which has a high efficiency degradation capability to p-xylene is obtained by selection. The results of physiological and biochemical experiment and 16S rDNA gene identification indicate that the bacterial strain belongs to pseudomonas sp. Its optimum degradation conditions are pH=7.5, 30 ℃ cultivation temperature and mechanical shaker’s speed of 150r/min. The high efficiency bacterial strain is put into actual waste water and can degrade all p-xylene in it in a short time.