白腐菌对焦化废水中喹啉的降解及机理研究

Study on Degradation of Quinoline in Coking Plant Wastewater Using White Rot Fungi

选用白腐菌BP降解喹啉，研究了白腐菌在不同培养基中对喹啉的降解过程和机理，以及喹啉的降解与白腐菌漆酶活力、生物量比增长速率、培养基pH值的关系。结果显示秸秆滤出液培养基中生长的白腐菌对喹啉具有最高的去除率89％；喹啉的相对去除率与白腐菌漆酶活力、生物量比增长速率具有较好的相关性：白腐菌BP最适pH为6～7，2-羟基喹啉是喹啉降解过程中首先出现的中间产物。

White rot fungus（BP） was selected to degrade quinoline. The research included the degradation process and mechanism of quinoline in different eulture mediums, the relations of degradation of quinoline with activity of laccase , the specific increase rate of biomass and pH of culture medium. Results showed that 89% of quinoline was degraded by white rot fungi in the culture medium of straw leaching liquid. The relative degradation rate of quinoline was close correlated with the activity of laccase , specific increase rate of biomass. The optimal pH condition for White rot fungus（ BP） was 6--7,2--OH --quinoline was the first intermediate in the hiodegradation orocess of quinoline.