萘好氧降解菌的筛选及降解特性的初步研究  

Strains Isolation and Study on Aerobic Biodegradability of Naphthalene

作　　者：杨春[1] 杨琦[1] 杨素银[1] 蒋小伟[1] 尚海涛[1] 

机构地区：[1]中国地质大学水资源与环境学院,北京100083

出　　处：《环境科学与技术》2005年第6期19-21,共3页Environmental Science & Technology

基　　金：北京市自然科学基金(8052017)

摘　　要：从城市污水处理厂活性污泥中驯化筛选出6个萘降解菌株,这些菌株都能快速降解水杨酸。以萘为唯一碳源,采用瓦勃氏微量呼仪的实验表明,菌株可以不同程度的降解萘。在pH为7.2,萘含量为20mg/L的条件下,菌株生长最好,2d后的萘降解率高达96.5%。Six strains which could evidently degrade naphthalene were isolated from activated sludge of sewage treatment plant.The strains showed the capability of degrading salicylate quickly.Using Warbury respirometer and naphthalene as sole carbon resource and energy,the strains all were proved to biodegrade naphthalene under the concentration tested.Some strains were inhibited by toxicity of naphthalene at the beginning,but others grew well.The optimum condition of growth is pH7.2 and the concentration of naphthalene is 20mg/L.The degradation rate of naphthalene is more than 96.5% in these conditions.

关 键 词：菌株筛选 萘 生物降解性能 最适生长条件 

分 类 号：X703[环境科学与工程—环境工程] TE991.3[石油与天然气工程—石油机械设备]