厌氧混合培养条件下六氯苯共代谢降解的活性分析  

STUDY ON COMETABOLIC DEGRADATION OF HEXACHLOROBENZENE UNDER ANAEROBIC MIXED CULTIVATION

作　　者：萨如拉[1,2,3] 曲婷[2] 贾晓珊[2] 杨小毛[1,3] 

机构地区：[1]北京大学香港科技大学深圳研修院,深圳518057 [2]中山大学环境科学与工程学院,广州510275 [3]北京大学环境科学与工程学院,北京100871

出　　处：《环境工程》2009年第S1期8-11,95,共5页Environmental Engineering

基　　金："985"工程二期项目

摘　　要：针对长期厌氧驯化培养获得的六氯苯(HCB)降解微生物,采用标准血清瓶实验探讨及分析了其在不同共代谢反应条件下的活性变化。结果表明,葡萄糖(250mg/L)的加入明显提高HCB的降解活性,但随着葡萄糖浓度的增加(250～1000mg/L)HCB降解活性的提高不明显;氮源添加量影响HCB的降解活性,随着氮源添加量的减少,微生物对HCB的降解活性明显降低;Fe3+的存在促进HCB的降解,Fe3+浓度为5mg/L时对HCB降解促进作用显著;共存污染物1,2,4-TCB和1,2,4,5-TeCB的存在降低微生物对HCB的降解活性。The standard serum bottle experiment was employed to analyze the degradation activities of microorganisms acquired by long-term anaerobic domestication cultivation with hexachlorobenzene(HCB)under different conditions.The results showed that the activity of microorganisms to degrade HCB was increased significantly with the glucose(250 mg/L).The degradation activities of microorganisms didn't increased with the increase of glucose concentrations.The nitrogen sources showed significant effects on the degradation of HCB.The degradation ability was decreased with the decrease of concentrations of nitrogen sources.The degradation was enhanced by Fe 3+,and the optimal concentration of Fe 3+ was 5 mg/L.The HCB degradation activity was decreased by the co-existence pollutants,1,2,4-trichlorobenzene and 1,2,4,5-tetrachlorobenzene.

关 键 词：厌氧微生物 六氯苯 共代谢 反应条件 降解活性 

分 类 号：X703.1[环境科学与工程—环境工程]