Influence Factors of Nitrogenous Heterocyclic CompoundQuinoline Degradation Under Anoxic Conditions

Abstract:

A study was made of the anoxic degradation and removal of nitrogenous heterocyclic compoundquinoline,denitrification of acclimated sludge as well as the effect of pH,C/N ratio,bioferric on degradation of quinoline under anoxic conditions by flaskshaking tests.The microbial degradation products were measured and the degradation pathway of quinoline in anoxic condition was analyzed.The results indicate that quinoline is removed by three steps:biosorption,desorption and biodegradation.The optimal range of pH is between 7 and 9.The C/ N ratio does not affect the reduction of quinoline obviously.Bioferric process cannot improve the degradation of quinoline,quinoline can be used as the sole carbon and nitrogen sources for biodegradation.

Key words:nitrogenous heterocyclic compound; quinoline; anoxic; influence factors