Removal of Color and COD from a Mixture of Four Reactive Azo Dyes Using Fenton Oxidation Process
Removal of Color and COD from a Mixture of Four Reactive Azo Dyes Using Fenton Oxidation Process
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使用芬顿氧化工艺去除四种活性偶氮染料混合物中的颜色和 COD
DOI：
10.1081/ese-120023371
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
O. Tünay
中科院分区：
文献类型：
--
作者：
S. Meriç;D. Kaptan;O. Tünay
摘要本文研究了四种活性染料的混合染料，Remazol黑5（RB 5）、Remazol红RB（RR）、Remazol黄84（RY）、Remazol亮蓝（RB）使用芬顿氧化工艺（FOP）。确定了最佳pH值、温度、FeSO 4和H2 O2的用量。考虑到染料在印染厂中的实际施用剂量，对含有100 mg L-1（RB + RY）、200 mg L-1（RB 5 + RR）、300 mg L-1（RB 5 + RR + RB + RY）和400 mg L-1（RR + RB + RY）染料的总浓度的样品进行实验。在30°C下，使用400 mg L−1 FeSO 4和800 mg L−1 H2 O2观察到最佳pH为2.5，导致RB 5和RR的混合物的COD去除率超过96%，Pt-Co脱色率超过99%。确定的最佳条件为（RB 5 + RR + RB + RY）混合物的pH为4.0，温度为50°C，FeSO 4为500 mg L-1，H2 O2为1000 mg L-1。在3.0 pH和50°C下，使用200 mg L−1 FeSO 4和300 mg L−1 H2 O2氧化100 mg L −1等量RB和RY的混合物溶液。
Abstract This study was designed to decolorize and to reduce COD content in a mixture of four reactive dyes, i.e., Remazol Black 5 (RB5), Remazol Red RB (RR), Remazol Yellow 84 (RY), Remazol Brilliant Blue (RB) using Fenton Oxidation Process (FOP). Optimum pH, temperature, and the doses of FeSO4 and H2O2 were determined. Experiments were conducted on the samples containing a total concentration of 100 mg L−1 (RB + RY), 200 mg L−1 (RB5 + RR), 300 mg L−1 (RB5 + RR + RB + RY), and 400 mg L−1 (RR + RB + RY) dyes considering their actual application doses in dyehouses. Optimum pH was observed as 2.5 at 30°C using 400 mg L−1 FeSO4 and 800 mg L−1 of H2O2 resulting in more than 96% COD and 99% Pt-Co unit of color removal for the mixture of RB5 and RR. The optimum conditions determined were 4.0 pH, 50°C, and 500 mg L−1 FeSO4 applying 1000 mg L−1 H2O2 for the mixture of (RB5 + RR + RB + RY). A 100 mg L−1 solution of a mixture of RB and RY at equal amounts was oxidized using 200 mg L−1 FeSO4 and 300 mg L−1 H2O2 at 3.0 pH and 50°C.