Comparison of several advanced oxidation processes for the decolorization of Reactive Red 120 azo dye in aqueous solution

被引：180

作者：

Kusvuran, E ^{[1
]}

Gulnaz, O

Irmak, S

Atanur, OM

Yavuz, HI

Erbatur, O

机构：

[1] Cukurova Univ, Arts & Sci Fac, Dept Chem, TR-01330 Adana, Turkey

[2] Cukurova Univ, Arts & Sci Fac, Dept Biol, TR-01330 Adana, Turkey

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2004年 / 109卷 / 1-3期

关键词：

Reactive Red 120; advanced oxidation processes; L-H kinetics; decolorization; mineralization;

D O I：

10.1016/j.jhazmat.2004.03.009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study UV/TiO2, electro-Fenton (EF), wet-air oxidation (WAO), and UV/electro-Fenton (UV/EF) advanced oxidation processes (AOPs) have been applied to degrade Reactive Red 120 (RR120) dye in aqueous solution. The most efficient method on decolorization and mineralization of RR120 was observed to be WAO process. Photocatalytic degradation of RR120 by UV/TiO2 have been studied at different pH values. At pH 3 photocatalytic degradation kinetics of RR120 successfully fitted to Langmuir-Hinshelwood (L-H) kinetics model. The values of second order degradation rate (k") constant and adsorption constant (K) were determined as 4.525 mg L-1 min(-1) and 0.387 L mg(-1), respectively. Decolorization efficiency observed in the order of WAO > UV/TiO2 = UV/EF > EF while WAO > UV/TiO2 > UV/EF > EF order was observed in TOC removal (mineralization). For all AOPs, it was found that degradation products in reaction mixture can be disposed safely to environment after 90 min treatment. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：85 / 93

页数：9

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