直链烷基苯磺酸钠(LAS)降解菌的筛选及其降解特性的初步研究  

STUDDZS OF SCREENING MICROORGANISMS DEGRADING LINEAR SODIUM ALKYLBENZENESULFONATE (LAS) AND ITS DEGRADINGCHARACTERISTICS

作　　者：应启锋[1] 肖昌松[1,2] 纪树兰[1] 肖昌松 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022 [2]中国科学院微生物研究所,北京100080

出　　处：《微生物学通报》2002年第1期1-5,共5页Microbiology China

基　　金：北京市自然科学基金资助项目(No.8992004)

摘　　要：从洗衣粉生产废水中分离到一株高效降解 LAS（Linear Sodium Alkylbenzenesulfonate）菌GZ6,经初步鉴定其为杰氏棒杆菌（Corynebaerium jeikeium GZ6）。该菌株最高可以降解700mg/L左右的LAS,降解LAS的最适pH值和温度分别为7.0和30℃,最适LAS浓度为400mg/L,所需时间为24h,降解率可达98.7％。实验还表明一些重金属离子如Hg2+、Co2+、Cd2+等对该菌株降解LAS有不同程度的抑制作用。A bacterium which can effectively degrade LAS (Linear Sodium Alkylbenzenesulfonate) was isolated from washing powder manufacturing effluent and was preliminarily identified as Corynebacterium jeikeium GZ6. The bacterium can degrade LAS up to till 700 mg/L, and the optimum pH, temperature and concentration of LAS are 7.0, 30℃ and 400 mg/L, respectively. The biodegradation rate can reach 98.7% after 24 hours'cultivation in the suitable conditions. Experiments also showed that some heavy metal ions such as Hg2+ , Co2+ , Cd2+ can differently inhibit the degradation of LAS.

关 键 词：杰氏棒氏菌 直链烷基苯磺酸钠 生物降解 废水处理 筛选 降解特性 

分 类 号：X172[环境科学与工程—环境科学] X783.03