| Wastewater with high salt and containing phenol is one of the extremely difficult to treat wastewaters, and screening a halophilic bacterium that capable to biodegrade phenol is conducive to solve the poser. In this study, moderately halophilic bacteria that capable of degrading phenol were isolated and screened from salt lake of Ayding Lake in Xinjiang, and the composition, diversity and degradative abilities of the bacteria were investigated. The study results showed that a total of 45 positive strains were screened from 166 halophilic bacterial strains cultured in medium containing 100 mg/l phenol as sole carbon source, and classified into 3 phyla, 5 families, and 9 genera, Among them Nocardiopsis was the dominant one accounting for 68.8% of the total, the rest was Bacillus, Gracilibacillus, Pontibacillus, Halobacillus, Marinococcus, and Halomonas. Ten days after cultured in liquid medium containing 100mg/L phenol, the degradation rate of the 45 strains was 1~17%. This study has provided microbial species resources for industrial application and possessing the value to tap and study further. |
