高效降氰菌的筛选及其特性研究  

Study on Screening of High-efficiency Cyanide-degradable Fungi and Their Characteristics

作　　者：乔勇[1] 李正山[1] 徐明杰[1] 王向东[1] 

机构地区：[1]四川大学建筑与环境学院,成都610065

出　　处：《四川环境》2006年第4期35-38,共4页Sichuan Environment

摘　　要：本研究从电镀废水中分离出了三株能够高效降解自由氰根的菌种，并对这三株菌的生长曲线和影响其降解氰化物的因素进行了研究。结果表明，这三株菌分别属于青霉属、木霉属和酵母属，并命名为M3、Mw4和Ms；其最大生长量的时间分别为15、20和18小时；当CN^-初始浓度为80mg／L时，M3菌16h内降解氰化物的最优条件是pH为5-7、温度为20℃～30℃、摇床转速为130rpm、接种量为10％。在此条件下，M3菌将80mg/L CN^-降解到0．22mg/L，降氰率达到98．9％。该研究结果可为微生物在处理含氰废水的实际应用提供依据。Three species of fungi were obtained from electroplating wastewater, named as M3, Mw4, and Ms respectively.All of them can degrade CN^- efficiently. M3 was identified as Penicillum. Its optimum pH value was 5 ～ 7, optimum temperature was 20 ℃～ 30 ℃, optimum agitation rate was 130 rpm, and optimum inoculum was 10% .Under optimum conditions, the degradation rate of CN^- was 98.9%. The results will provide theoretical foundation for cyanide-containing wastewater treatment.

关 键 词：降氰菌 降氰率 生长曲线 

分 类 号：X781.1[环境科学与工程—环境工程]