Fenton氧化降解活性艳红X-3B条件及历程研究

目的]研究Fenton氧化降解活性艳红X-3B的条件及历程。方法]利用Fenton氧化工艺,分析3种不同初始浓度的活性艳红X-3B废水的降解条件,同时利用GC-MS对其降解产物及历程进行研究。结果]当H2O2∶Fe2+(摩尔比)=3.1时,COD去除效果最好,随着Fe2+投加量的增加,废水会变成铁红色,同时沉淀物增加;对于COD分别为200、400和800 mg/L的废水,H2O2投加量分别为0.5、1.0、3.5 ml,废水的初始pH为4～5时,COD的去除率最高。Fenton氧化反应的速度非常快,大部分的降解都发生在初始的5 min之内。结论]Fenton氧化技术是一种高效降解难降解染料的实用技术。

A Study of Degradation of Reactive Brilliant X-3B Based on Fenton Oxidation

Objective] We aimed to study the degradation conditions and course of reactive brilliant X-3B on the basis of Fenton oxidation.Method] By using Fenton oxidation,we studied the degradation conditions of reactive brilliant X-3B wastewater with different initial concentration,then analyzed its degradation products and process through gas chromatography-mass spectrometer(GC-MS).Result] When H2O2∶ Fe2+(molar ratio)=3.1,the removal rate of COD was the highest.With the increase of Fe2+ usage,the wastewater became red and more deposits generated.As COD of wastewater was 200,400 and 800 mg/L,the usage of H2O2 was 0.5,1.0 and 3.5 ml respectively,and the initial pH of the wastewater was 4-5,the removal rate of COD reached the maximum values.In addition,Fenton action was very fast,that is,most degradation occurred in the first 5 min.Conclusion] Fenton oxidation is practical and efficient in the degradation of dyes that are degraded difficultly.