Screening a Novel High Effective Linear Sodium Alkylbenzenesulfonate Degradation Strain

摘要：

A bacterial strain was obtained through the screening experiments of decomposition of Linear Sodium Alkybenzenesulfonate (LAS), which had high degradability for LAS and was named Xiawg-1. The gene sequence obtained from the DNA extraction and polymerase chain reaction (PCR) amplification was compared with NCBI Genbank of U.S.A., and the strain was preliminary identified to be Enterobacter sp. The optimum growth conditions was pH 7.5, 30℃, 150r/min, 50mL/250mL (liquid volumes/flask volumes). When the LAS concentration was above 600mg/L, Xiawg-1s LAS degradation ratio decreased with the increase of the LAS concentration. The strain had a good tolerance to metal ions, but some heavy metal ions were harmful to it. Xiawg-1 had a clear law of growth. The strain had strong adaptability to the environmental conditions, which showed it was a high effective LAS degradation strain and had better application prospects in wastewater treatment.

关键词： screening LAS degradation strain DNA extraction polymerase chain reaction (PCR) Enterobacter sp. the optimum growth conditions law of growth and LAS degradation

作者: GUO Jifeng WANG Rongchang XIA Siqing

作者单位: State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

会议类型: 国际会议

会议名称: 2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-11-13（万方平台首次上网日期，不代表论文的发表时间）