The catalytic oxidation of malachite green by the microwave-Fenton processes

被引：18

作者：

Zheng, Huaili ^{[1
]}

Zhang, Huiqin ^{[1
]}

Sun, Xiaonan ^{[2
]}

Zhang, Peng ^{[1
]}

Tshukudu, Tiroyaone ^{[1
]}

Zhu, Guocheng ^{[1
]}

机构：

[1] Chongqing Univ, State Minist Educ, Key Lab Gorges Reservoir Reg Ecoenvironm 3, Chongqing 400045, Peoples R China

[2] Chongqing Univ, Coll Sci, Chongqing 400045, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2010年 / 62卷 / 06期

基金：

中国国家自然科学基金;

关键词：

de-colorization; Fenton process; malachite green; microwave-Fenton process; PHOTOCATALYTIC DEGRADATION; WASTE-WATER; TIO2; REACTIVE-BLACK-5; DECOLORIZATION;

D O I：

10.2166/wst.2010.411

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Catalytic oxidation of malachite green using the microwave-Fenton process was investigated. 0% of malachite green de-colorization using the microwave process and 23.5% of malachite green de-colorization using the Fenton process were observed within 5 minutes. In contrast 95.4% of malachite green de-colorization using the microwave-Fenton was observed in 5 minutes. During the microwave-Fenton process, the optimum operating conditions for malachite green de-colorization were found to be 3.40 of initial pH, 0.08 mmol/L of Fe2+ concentration and 12.5 mmol/L of H2O2 concentration. Confirmatory tests were carried out under the optimum conditions and the COD removal rate of 82.0% and the de-colorization rate of 99.0% were observed in 5 minutes. The apparent kinetics equation of -dC/dt = 0.0337 [malachite green]Fe-0.9860[(2+)](0.8234)[H2O2](0.1663) for malachite green de-colorization was calculated, which implied that malachite green was the dominant factor in determining the removal efficiency of malachite green based on microwave-Fenton process.

引用

页码：1304 / 1311

页数：8

共 23 条

[1] Degradation of 4-Chlorophenol by microwave irradiation enhanced advanced oxidation processes [J].

Ai, ZH ;

Yang, P ;

Lu, XH .

CHEMOSPHERE, 2005, 60 (06) :824-827

[2]

CARLOS A, 2005, CHEM ENG P, V44, P923

[3] Vis and UV photocatalytic detoxification methods (using TiO2, TiO2/H2O2, TiO2/O3, TiO2/S2O82-, O3, H2O2,S2O82-, Fe3+/H2O2 and Fe 3+/H2O2/C2O42-) for dyes treatment [J].

Domínguez, JR ;

Beltrán, J ;

Rodríguez, O .

CATALYSIS TODAY, 2005, 101 (3-4) :389-395

[4] Discoloration and mineralization of Reactive Red HE-3B by heterogeneous photo-Fenton reaction [J].

Feng, JY ;

Hu, XJ ;

Yue, PL ;

Zhu, HY ;

Lu, GQ .

WATER RESEARCH, 2003, 37 (15) :3776-3784

[5] Decolourization of textile industry wastewater by the photocatalytic degradation process [J].

Hachem, C ;

Bocquillon, F ;

Zahraa, O ;

Bouchy, M .

DYES AND PIGMENTS, 2001, 49 (02) :117-125

[6] Hydroxyl radicals in microwave photocatalysis. Enhanced formation of OH radicals probed by ESR techniques in microwave-assisted photocatalysis in aqueous TiO2 dispersions [J].

Horikoshi, S ;

Hidaka, H ;

Serpone, N .

CHEMICAL PHYSICS LETTERS, 2003, 376 (3-4) :475-480

[7] Photoassisted fenton degradation of nonbiodegradable azo-dye (Reactive Black 5) over a novel supported iron oxide catalyst at neutral pH [J].

Hsueh, CL ;

Huang, YH ;

Wang, CC ;

Chen, CY .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 245 (1-2) :78-86

[8]

JI YF, 2003, WATER RES, V37, P3776

[9]

JIAN HS, 2007, J MOL CATAL A-CHEM, V148, P172

[10] Decolorization of textile wastewater by photo-fenton oxidation technology [J].

Kang, SF ;

Liao, CH ;

Po, ST .

CHEMOSPHERE, 2000, 41 (08) :1287-1294

← 1 2 3 →