Application of Fenton process for decolorization of reactive black 5 from synthetic wastewater: Kinetics and thermodynamics

被引：59

作者：

Argun, Mehmet Emin ^{[1
]}

Karatas, Mustafa ^{[2
]}

机构：

[1] Selcuk Univ, Dept Environm Engn, Engn & Architecture Fac, TR-42003 Konya, Turkey

[2] Aksaray Univ, Fac Engn, Dept Environm Engn, Aksaray, Turkey

来源：

ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY | 2011年 / 30卷 / 04期

关键词：

Fenton process; reactive black 5; decolorization; kinetics; thermodynamics; AZO-DYE; AQUEOUS-SOLUTION; DEGRADATION; OXIDATION; ORANGE; COMBINATION; PARAMETERS; RADIATION; REMOVAL;

D O I：

10.1002/ep.10504

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The decolorization and degradation efficiency of the azo dye Reactive Black 5 (RB5) by Fenton system were investigated in this study. The operation parameters such as Fe2+:H2O2 ratio, pH value, initial concentration of RB5, reaction time, and temperature were examined. Maximum decolorization (99%) and degradation (88% COD removal) efficiencies were achieved at the Fe2+:H2O2 ratio of 0.05 and pH 3 for 15-min reaction time. The decolorization kinetic of RB5 followed pseudo-second-order reaction kinetic. The increase of temperature caused decreasing of obtained rate constants and increasing of corresponding half-lives. The article also discussed thermodynamic parameters including changes in Gibbs free energy, enthalpy, and entropy for the decolorization of RB5 by Fenton and exposed that the oxidation process was spontaneous and exothermic under natural conditions. (c) 2010 American Institute of Chemical Engineers Environ Prog, 2010

引用

页码：540 / 548

页数：9

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