日光/H202/草酸铁催化氧化降解活性艳红的研究

Study on the photocatalytic oxidation degradation of reactive brilliant red by solar/hydrogen peroxide/ferrioxalate complexes

研究了日光/H202/草酸铁体系以日光为驱动力对可溶性染料活性艳红进行降解反应,探讨了溶液的pH、H2O2、光强和活性艳红的起始浓度对催化反应的影响。结果表明,对活性艳红的降解速率受pH、H2O2、草酸铁的浓度、入射光强的影响很大。在研究范围内,pH=3.0和在日光照射下其降解效果最好,同时,表明在同一光强光源条件下色度、TOC的去除率均比在UV/TiO2的效果好。

The degradations reactions of soluble reactive brilliant red by hydrogen peroxide / ferrioxalate complexes were studied under the solar light. The influence of the pH , usage of hydrogen peroxide and ferric oxalate, light intensity, initial concentration of reactive brilliant red in solution reaction on photocatalysis were discussed. The results indicated that the initial pH of the solution , the usage of hydrogen peroxide and ferric oxalatc , light intensity have significant effects on this photooxidative process. In the research scope, the degradation reaction of reactive brilliant red is the best by hydrogen peroxide/ferric oxalate under pH = 3.0 and solar irradiation. And light intensity can accelerate the process of degradation effectively. The removal percentage of color and TOC by hydrogen peroxide/ferric oxalate is higher than UV/TiO2. under different light intensity and different lamp.