Photocatalytic mineralization of azo dye Acid Orange 7 under solar light irradiation

被引：15

作者：

Ong, Soon-An ^{[1
]}

Ho, Li-Ngee ^{[2
]}

Wong, Yee-Shian ^{[1
]}

Min, Ohm-Mar ^{[1
]}

Lai, Li-Sze ^{[1
]}

Khiew, Siee-Kung ^{[1
]}

Murali, V. ^{[1
]}

机构：

[1] Univ Malaysia Perlis, Sch Environm Engn, Arau 02600, Perlis, Malaysia

[2] Univ Malaysia Perlis, Sch Mat Engn, Arau 02600, Perlis, Malaysia

来源：

DESALINATION AND WATER TREATMENT | 2012年 / 48卷 / 1-3期

关键词：

Azo dye; Acid Orange 7; Photocatalytic process; Sunlight; Decolorization; Kinetic study; WASTE-WATER; CONGO-RED; DEGRADATION; OXIDATION; DECOMPOSITION; TIO2; DECOLORIZATION;

D O I：

10.1080/19443994.2012.698820

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The objective of this study was to investigate mineralization of hazardous water soluble azo dye Acid Orange 7 (AO7) under photocatalytic process. In this experiment, sunlight was used as the source for UV irradiation and titanium dioxide, TiO2 as catalyst. The effects of some process variables on decolorization such as amount of TiO2, azo dye concentration and dosage of hydrogen peroxide (H2O2) were examined. TiO2-based photocatalytic degradation is an effective, economic and faster mode of removing azo dye AO7 from aqueous solution. The presence of sunlight enhanced the decolorization rate of AO7 and mineralized the intermediate products completely. The mineralization of AO7 was supported by the UV-Vis and ion chromatography analysis. The addition of proper amount of H2O2 could optimize the decolorization rate of AO7. The photocatalytic degradation of AO7 followed first-order kinetic model.

引用

页码：245 / 251

页数：7

共 29 条

[1] Studies on the photocatalytic decolorization of pararosanilne chloride dye and its simulated dyebath effluent [J].

Ali, Ahmed Hassan ;

Kapoor, Seema ;

Kansal, Sushil Kumar .

DESALINATION AND WATER TREATMENT, 2011, 25 (1-3) :268-275

[2]

BANSAL P, 2010, PURIFIC TECHNOL, V72, P357, DOI DOI 10.1016/J.SEPPUR.2010.03.005

[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] Photocatalytic degradation of chlorfenapyr in aqueous suspension of TiO2 [J].

Cao, YS ;

Chen, JX ;

Huang, L ;

Wang, YL ;

Hou, Y ;

Lu, YT .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2005, 233 (1-2) :61-66

[5]

Coughlin MF, 1997, WATER SCI TECHNOL, V36, P215, DOI 10.1016/S0273-1223(97)00327-2

[6]

Dixit A., 2010, INT J CHEM ENG APPL, V1, P247, DOI DOI 10.7763/IJCEA.2010.V1.42

[7]

Galindo C., 2002, J PHOTOCH PHOTOBIO A, V130, P35

[8] Photocatalytic decomposition of azo-dye acid black 1 in water over modified titanium dioxide [J].

Grzechulska, J ;

Morawski, AW .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 36 (01) :45-51

[9] Enhanced photocatalytic degradation of C.I. Reactive Orange 86 in aqueous environment using nanostructure Zn1-xCoxO composite thin film coated on glass [J].

Habibi, Mohammad Hossein ;

Farsani, Iman Asadi .

DESALINATION AND WATER TREATMENT, 2010, 22 (1-3) :204-210

[10] Photocatalytic activity of nanocrystalline mesoporous-assembled TiO2 photocatalyst for degradation of methyl orange monoazo dye in aqueous wastewater [J].

Jantawasu, Piyanud ;

Sreethawong, Thammanoon ;

Chavadej, Sumaeth .

CHEMICAL ENGINEERING JOURNAL, 2009, 155 (1-2) :223-233

← 1 2 3 →