Photocatalytic degradation of Direct Red 23 dye using UV/TiO2:: Effect of operational parameters

被引：194

作者：

Sohrabi, M. R. ^{[1
]}

Ghavami, M. ^{[1
]}

机构：

[1] Islamic Azad Univ N Tehran Branch, Dept Chem, Tehran, Iran

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 153卷 / 03期

关键词：

Direct Red 23 dye; UV/TiO2; photocatalysis; wastewater treatment;

D O I：

10.1016/j.jhazmat.2007.09.114

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, the photocatalytic degradation of Direct Red 23 (Scarlet F-4BS) was investigated in UV/TiO2 system. The effect of catalyst loading and pH on the reaction rate was ascertained and optimum conditions for maximum degradation were determined. The results obtained showed that acidic pH is proper for the photocatalytic removal of Direct Red 23. In addition, the effects of several cations (Cu2+, Al3+,, Cr3+,, and Sn4+,) and anions (BiO3-, SO42-, and CN-) and C2H5OH were examined in this photocatalytic process. On the order hand, three types of catalysts (Fe2O3, SnO2, and ZnO) were compared with TiO2. After 90 min reaction, the relative decomposition order established was UV/TiO2 > UV/SnO2 > UV/Fe2O3 > UV/ZnO. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1235 / 1239

页数：5

共 15 条

[1] Semiconductor-mediated photocatalysed degradation of two selected azo dye derivatives, amaranth and bismarck brown in aqueous suspension [J].

Abu Tariq, M ;

Faisal, M ;

Muneer, M .

JOURNAL OF HAZARDOUS MATERIALS, 2005, 127 (1-3) :172-179

[2] Photocatalytic degradation of azo-dyes reactive black 5 and reactive yellow 145 in water over a newly deposited titanium dioxide [J].

Aguedach, A ;

Brosillon, S ;

Morvan, J ;

Lhadi, EK .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 57 (01) :55-62

[3] Photocatalytic decolorization and degradation of dye solutions and wastewaters in the presence of titanium dioxide [J].

Bizani, E. ;

Fytianos, K. ;

Poulios, I. ;

Tsiridis, V. .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 136 (01) :85-94

[4] Decolorizing of lignin wastewater using the photochemical UV/TiO2 process [J].

Chang, CN ;

Ma, YS ;

Fang, GC ;

Chao, AC ;

Tsai, MC ;

Sung, HF .

CHEMOSPHERE, 2004, 56 (10) :1011-1017

[5] Visible light induced photocatalytic degradation of organic pollutants [J].

Chatterjee, D ;

Dasgupta, S .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2005, 6 (2-3) :186-205

[6] Photocatalysed degradation of two selected dyes in UV-irradiated aqueous suspensions of titania [J].

Faisal, M. ;

Abu Tariq, M. ;

Muneer, M. .

DYES AND PIGMENTS, 2007, 72 (02) :233-239

[7] Effect of ZnFe2O4 doping on the photocatalytic activity of TiO2 [J].

Liu, GG ;

Zhang, XZ ;

Xu, YJ ;

Niu, XS ;

Zheng, LQ ;

Ding, XJ .

CHEMOSPHERE, 2004, 55 (09) :1287-1291

[8] Photocatalytic degradation of azo dyes by nitrogen-doped TiO2 nanocatalysts [J].

Liu, Y ;

Chen, X ;

Li, J ;

Burda, C .

CHEMOSPHERE, 2005, 61 (01) :11-18

[9]

Neppolian B, 2002, J SCI IND RES INDIA, V61, P224

[10] Photocatalytic degradation of a textile azo dye, Sirius Gelb GC on TiO2 or Ag-TiO2 particles in the absence and presence of UV irradiation:: the effects of some inorganic anions on the photocatalysis [J].

Özkan, A ;

Özkan, MH ;

Gürkan, R ;

Akçay, M ;

Sökmen, M .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2004, 163 (1-2) :29-35

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