【作者】 蔡晶晶； 李济吾；

【Author】 Li Jiwu Cai Jingjing (College of Food,Biotechnology & Environmental Engineering,Zhejiang Gongshang University,Hangzhou 310035)

【机构】 浙江工商大学食品生物与环境工程学院；

【摘要】 从焦化废水的活性污泥中分离出一株对吡啶具有优势降解效果的链霉菌,研究了其对吡啶的降解效果。结果表明：该菌体对吡啶有很强的耐受力,能以吡啶为唯一碳源和氮源生长,链霉菌降解吡啶符合一级动力学方程,100mg/L 的吡啶降解速率为 K=0．4011d-1。在 30oC 条件下,培养7天,初始浓度为250 mg·L-1吡啶的去除率达到98．4%。紫外分光光谱分析表明,吡啶的特征环被破坏。更多还原

【Abstract】 A pyridine-degrading strain(Streptomyces sp.)was isolated from bentonite.The characteristics of pyridine-degrading by Streptomyces sp.were studied.The results showed that this strain could grow using pyridine as only carbon resource and nitrogen resource,and has rather strong ability to endure pyridine.The degradation of pyridine meets with one-order kinetics,and the reaction’s degradation rate K is 0.4011d-1.Under the conditions of 30℃,pyridine removal rate can reach 98.4% in 7 days.The ultraviolet-visible spectrums showed that the character ring of pyridine was broken down by Streptomyces.更多还原