Fenton法脱色降解活性黑5模拟废水

本研究对benton试剂脱色降解活性黑5模拟废水进行了初步的实验研究。在恒温条件下，分别以600nm和255nm波长下染料溶液吸光度为主要测定指标，对该种染料的脱色及其芳环结构的氧化降解进行了同步分析。考察了染料溶液初始pH值、Fe^2＋浓度、H2O2投加量、染料浓度等因素的影响。结果表明，在一定实验条件下，活性黑5的脱色效率可达到99％，染料芳环结构的降解可达30％，COD去除率达到57．5％。活性黑5的脱色降解过程分为两个阶段进行。在最佳pH范围内，H2O2投加量、Fe^2＋浓度、染料浓度对染料初始脱色速率影响不大，但对后续的芳环结构降解影响较大。

Decolorization and Degreadation of Reactive Black 5 Simulated Wastewater Using Fenton's Reagent

The oxidation of Reactive Black 5 in aqueous solution,using Fenton's reagent(Fe2+and H2O2)in a bath cell,has been studied.At constant temperature,Measurement of the absorbencies at 600nm and 255nm has been used to follow the decolorization of the dye and the degradation of its aromatic ring.In the experiment,the effects of some factors,such as initial pH,initial concentration of the dye,Fe2+,H2O2,have been investigated.The results of experiment indicate that the colour removal ratios of the dye,the degradative efficitency of its's aromatic and the removal efficiency of COD were 99%,30% and 57.5% respectively under the certain conditions.The dye was decomposed in a two-stage reaction.At the optinum pH,degradation of its aromatic ring was strongly affected by initial concentration of the dye,Fe2+ and H2O2,while the initial decolorization rate of the dye slightly affected.