Mahadwad O K, Jasra R V, Parikh P A, Tayade R J
Department of Chemical Engineering, VVP Engineering College, Rajkot - 360 005, India.
J Environ Sci Eng. 2010 Jul;52(3):181-4.
The photocatalytic degradation of commonly used textile dyes, namely, Reactive Black-5 (RB-5), Red (ME4BL), Golden Yellow (MERL), Blue-222, Methylene Blue, and Malachite Green, has been studied, using TiO2 (P25) as a photocatalyst. All the dye solutions could be decolorized. Kinetics of RB-5 oxidation reaction has been studied and was found to be of first order in dye concentration. Effects of different parameters such as catalyst amount, initial concentration of the dyes, and pH of solution along with biological parameters (TOC and COD) on the rate of degradation were studied. Experimental results showed that photocatalytic degradation of commonly used RB-5 was very effective at the optimum catalyst quantity of 2.5 g/L.
已使用二氧化钛（P25）作为光催化剂，研究了常用纺织染料，即活性黑-5（RB-5）、红色（ME4BL）、金黄（MERL）、蓝色-222、亚甲基蓝和孔雀石绿的光催化降解。所有染料溶液均可脱色。已研究了RB-5氧化反应的动力学，发现其对染料浓度呈一级反应。研究了不同参数，如催化剂用量、染料初始浓度、溶液pH值以及生物参数（总有机碳和化学需氧量）对降解速率的影响。实验结果表明，在2.5 g/L的最佳催化剂用量下，常用RB-5的光催化降解非常有效。
