摘要:
对喹啉、异喹啉、2-甲基喹啉、3-甲基喹啉、4-甲基喹啉和6-甲基喹啉在睾丸酮丝毛单胞菌(Comamonas testosteroni Q10)作用下的降解及底物之间的相互作用进行研究.结果表明,喹啉和3-甲基喹啉不仅能有效地被降解,而且细菌也有明显的生长,而其它化合物虽有部分降解但没有观察到细胞生长.底物初始浓度的增加对菌Q10有一定抑制作用.喹啉的存在对其它化合物的降解具有不同的促进效应,其中尤以6-甲基喹啉和4-甲基喹啉最为明显,能在较短时间内得到完全去除,而在各二元体系中喹啉的降解受到这些化合物的抑制作用.
Abstract:
A bacterial strain Q10 with the ability to degrade quinoline was isolated from activated sludge of a gas generating wastewater and identified as Comamonas testosteroni.This paper focused on the study of the biodegradation ability of quinoline,2-methylquinoline,3-methylquinoline, 4-me thylquinoline,6-methylquinoline,isoquinoline and the substrates interactions.The results showed that quinoline and 3-methylquinoline can be effectively removed and they can stimulate the growth of strain Q10 simultaneously.However,no apparent cell growth was observed during other substrates degradation though they can partly be degraded.The increase of initial concentration of the substrates had inhibitory effect on the activity of strain Q10.The presence of quinoline can stimulate the degradation of other compounds to different degrees,in which the enhancement effects were significantly for the degradation of 6-methylquinoline and 4-methylquinoline and they can be completely removed in a short time.In all binary systems,however,the degradation of quinoline was inhibited.
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