麦芽糖假丝酵母降解苯酚的特性及动力学研究  

Characteristics and Kinetics of Phenol Degradation by Candida maltosa

作　　者：宋正光[1] 王国英[2] 岳秀萍[2] 米静[2] 

机构地区：[1]太原市排水管理处,山西太原030006 [2]太原理工大学环境科学与工程学院,山西太原030024

出　　处：《中国给水排水》2013年第9期77-80,共4页China Water & Wastewater

基　　金：山西省环境保护厅环保科研项目(201205);山西省高等学校教学改革项目(J2011015)

摘　　要：从活性污泥中分离得到一株高效降解苯酚菌,经形态特征观察和生理生化试验,鉴定该菌株为麦芽糖假丝酵母。该菌株能以苯酚为唯一碳源和能源,最适宜降解工艺条件如下:温度为30℃,初始pH值为7.0,摇床转速为200 r/min。降解试验表明,该菌能在69 h内完全降解1 800 mg/L苯酚。随着苯酚浓度的增加,底物抑制作用增强。菌株的生长动力学过程符合Hal-dane方程,可利用该方程模拟不同初始浓度苯酚的降解过程。An effective phenol-degrading strain was isolated from activated sludge, and was identi- fled as Candida maltosa based on morphological, biochemical and physiological experiments. The strain could utilize phenol as sole carbon and energy source. The optimum degradation conditions were tempera- ture of 30℃, initial pH of 7.0 and shaking speed of 200 r/min. The degradation experiment indicated that the strain could completely degrade 1 800 mg/L phenol within 69 h. The higher the phenol concen- tration was, the stronger the substrate inhibition was. Growth kinetics of the strain fitted the Haldane e- quation, which could be used to simulate phenol degradation at different initial concentrations.

关 键 词：麦芽糖假丝酵母 苯酚 生物降解 动力学 

分 类 号：X703[环境科学与工程—环境工程]