一株苯好氧降解菌的分离及其降解特性研究  

Isolation of a Aerobic Bacterial Strain Degrading Benzene and Its Degradation Characteristics

作　　者：孙淑琴 陈羚 张晓贇 张瑛[4] 

机构地区：[1]无锡市环境监测中心站,江苏无锡214023 [2]无锡太湖山水城旅游度假区管委会,江苏无锡214081 [3]无锡市自来水总公司,江苏无锡214031 [4]河海大学环境科学与工程学院,江苏南京210098

出　　处：《污染防治技术》2007年第2期15-17,共3页Pollution Control Technology

摘　　要：从一长期被苯类工业废水污染的土壤中驯化分离出一株能快速降解苯胺的菌株,初步鉴定为假单胞菌属。该菌株在5-35℃,都可以20mg/L的苯为碳源进行生长并完全降解苯,最适宜的生长温度为25℃;在pH为5-9范围内,可以生长并降解20mg/L的苯,偏碱性更适合细菌生长;培养过程中振荡速率大于120r/min,降解速率最大。A strain of aerobic bacteria degrading benzene was isolated, from contaminated soil and was identified as Pseudomonas sp.. The strain could grow and degrade benzene at a concentration of 20 mg/L under temperature 5 - 35 ℃ and pH 5 -9. The optimum conditions were as follows： temperature 25 ℃ , pH 7 - 8, shaking rate 120 r/min. The results showed that the benzene at a concentration lower than 300 mg/L could be degraded by the organism.

关 键 词：苯降解菌 好氧 降解特性 

分 类 号：X172[环境科学与工程—环境科学]