同分异构体喹啉和异喹啉的缺氧降解性能比较  

Comparison of anoxic degradation between isomeric compounds quinoline and isoquinoline

作　　者：李咏梅[1] 孙丽娟[1] 黄明祝[1] 顾国维[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《环境污染与防治》2005年第6期420-422,共3页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.50108009)

摘　　要：研究了同分异构体的含氮杂环化合物喹啉和异喹啉在缺氧条件下的降解情况,发现两者表现出不同的缺氧降解特性。喹啉可以在缺氧条件下得到有效降解,其缺氧降解的最佳碳氮比为8。在最佳碳氮比条件下,喹啉的缺氧降解过程符合一级动力学规律,在其降解过程中首先以硝酸盐为电子受体,当硝酸盐氮浓度为零时,亚硝酸盐氮浓度达到最高,此后喹啉的降解主要以亚硝酸盐为电子受体,并和亚硝酸盐氮同时达到最低浓度。异喹啉对硝酸盐的利用甚微,其降解主要表现为厌氧降解特征,降解过程符合零级动力学规律。Degradation of isomeric nitrogenous heterocyclic compounds quinoline and isoquinoline under anoxic conditions was compared. It was found that the two compounds represented different anoxic degradation characteristics. Quinoline can be effectively degraded under anoxic conditions, and the optimum ratio of carbon to nitrate was 8. The degradation process met with one-order kinetics equation. During the degradation of quinoline, nitrate was first used as electron acceptor, when it was consumed to the end, nitrite concentration reached to the highest, then nitrite was used as electron acceptor, and was consumed to the end with quinoline simultaneously. On the contrary,nitrate cannot be consumed during the period of degradation of isoquinoline. Therefore, isoquinoline represented the anaerobic degradation characteristics, and it met with the zero-order kinetics equation.

关 键 词：喹啉 异喹啉 缺氧降解 碳氮比 硝酸盐利用 

分 类 号：X506[环境科学与工程—环境工程]