Effects of oxidant concentration and temperature on decolorization of azo dye: comparisons of UV/Fenton and UV/Fenton-like systems

被引：12

作者：

Kuo, C. Y.

Pai, C. Y.

Wu, C. H. ^{[1
]}

Jian, M. Y. ^{[2
]}

机构：

[1] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung 807, Taiwan

[2] Da Yeh Univ, Dept Environm Engn, Changhua, Taiwan

来源：

WATER SCIENCE AND TECHNOLOGY | 2012年 / 65卷 / 11期

关键词：

decolorization; photo-Fenton; photo-Fenton-like; UV; PHOTO-FENTON; AQUEOUS-SOLUTION; DEGRADATION; OXIDATION; WATER; IONS; UV;

D O I：

10.2166/wst.2012.095

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study applies photo-Fenton and photo-Fenton-like systems to decolorize C.I. Reactive Red 2 (RR2). The oxidants were H2O2 and Na2S2O8; Fe2+, Fe3+, and Co2+ were used to activate these two oxidants. The effects of oxidant concentration (0.3-2 mmol/L) and temperature (25-55 degrees C) on decolorization efficiency of the photo-Fenton and photo-Fenton-like systems were determined. The decolorization rate constants (k) of RR2 in the tested systems are consistent with pseudo-first-order kinetics. The rate constant increased as oxidant concentration and temperature increased. Activation energies of RR2 decolorization in the UV/H2O2/Fe2+, UV/H2O2/Fe3+, UV/Na2S2O8/Fe2+ and UV/Na2S2O8/Fe3+ systems were 32.20, 39.54, 35.54, and 51.75 kJ/mol, respectively.

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收藏

页码：1970 / 1974

页数：5

相关论文

共 21 条

[1] A comparative study of the advanced oxidation of 2,4-dichlorophenol [J].

Al Momani, F ;

Sans, C ;

Esplugas, S .

JOURNAL OF HAZARDOUS MATERIALS, 2004, 107 (03) :123-129

[2] Comparative decoloration study of Neutral Red by different oxidative processes [J].

Alnuaimi, Maitha M. ;

Rauf, M. A. ;

Ashraf, S. Salman .

DYES AND PIGMENTS, 2007, 72 (03) :367-371

[3] Transition metal/UV-based advanced oxidation technologies for water decontamination [J].

Anipsitakis, GP ;

Dionysiou, DD .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 54 (03) :155-163

[4] Degradation of microcystin-LR using sulfate radicals generated through photolysis, thermolysis and e- transfer mechanisms [J].

Antoniou, Maria G. ;

de la Cruz, Armah A. ;

Dionysiou, Dionysios D. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 96 (3-4) :290-298

[5] Kinetic modeling based on the non-linear regression analysis for the degradation of Alizarin Red S by advanced photo Fenton process using zero valent metallic iron as the catalyst [J].

Devi, L. Gomathi ;

Rajashekhar, K. E. ;

Raju, K. S. Anantha ;

Kumar, S. Girish .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2009, 314 (1-2) :88-94

[6] THE ACTIVE PRINCIPLE OF CAROS ACID, HSO5- - X-RAY CRYSTAL-STRUCTURE OF KHSO5.H2O [J].

FLANAGAN, J ;

GRIFFITH, WP ;

SKAPSKI, AC .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1984, (23) :1574-1575

[7] Photochemical oxidation of p-chlorophenol by UV/H2O2 and photo-Fenton process.: A comparative study [J].

Ghaly, MY ;

Härtel, G ;

Mayer, R ;

Haseneder, R .

WASTE MANAGEMENT, 2001, 21 (01) :41-47

[8] Sono-Fenton oxidation of formic acid/formate ions in an aqueous solution: From an experimental design to the mechanistic modeling [J].

Grcic, Ivana ;

Obradovic, Monika ;

Vujevic, Dinko ;

Koprivanac, Natalija .

CHEMICAL ENGINEERING JOURNAL, 2010, 164 (01) :196-207

[9] TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations - A review [J].

Konstantinou, IK ;

Albanis, TA .

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY, 2004, 49 (01) :1-14

[10] Photo-assisted Fenton type processes for the degradation of phenol: A kinetic study [J].

Kusic, Hrvoje ;

Koprivanac, Natalija ;

Bozic, Ana Loncaric ;

Selanec, Iva .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 136 (03) :632-644