加压溶氧光催化反应器降解活性艳红X-3B  

STUDY ON THE DEGRADATION OF REACTIVE BRILLIANT RED X-3B IN THE PRESSURIZED PHOTOCATALYTIC REACTOR WITH OXYGEN

作　　者：钱勇兴[1] 陈金媛[1] 许炉生[1] 董霞[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,杭州310014

出　　处：《环境化学》2010年第1期88-91,共4页Environmental Chemistry

基　　金：国家自然科学基金(20877070);浙江省自然科学基金资助项目(Y5080223)

摘　　要：探讨了加压溶氧条件对活性艳红X-3B的降解与脱色的作用,考察了加压条件下pH值,TiO2投加量及温度等对活性艳红X-3B降解的影响.结果表明,加压条件与常压条件下变化趋势基本一致.加压充氧有助于活性艳红X-3B的降解与脱色,加压充N2对反应基本没有作用,说明增加活度不是关键因素,加压使溶液中溶解氧增加是导致活性艳红X-3B降解与脱色的主要原因.光催化降解过程,发色基团最易被打碎,60min内降解效果显著,而萘环和苯环降解效果不十分明显.CODCr的降解与色度的褪除成正相关,脱色率越高,COD的降解率也越高.In this paper,the effect of pressurization with oxygen on the degradation and decoloration of reactive brilliant red X-3B has been studied,The effect of pH value,TiO2 dosage,and temperature was investigated under high pressurization environment.The results showed that the degradation and decoloration under pressurization and normal atmospheric conditions had the same tendency,and obvious improvement in the Reactive Brilliant Red X-3B degradation rate was observed under the pressurization with O2.However,there was no remarkable promotion with N2.This indicates that the reactivity was increased by dissolved oxygen rather than pressurization.In the photocatalytic degradation process,the chromophore groups were decomposed easily,and significant photodegradation was observed within 60 min,while the degradation of naphthalene ring and benzene ring was not so obvious.The degradation of CODCrwas positively correlated with decoloration.

关 键 词：TIO2光催化 加压反应器 活性艳红X-3B 

分 类 号：X703[环境科学与工程—环境工程]