A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G
High color and organic composition, the effluents from the textile dyeing and finishing industry, can be treated by photocatalytic oxidation with UV/TiO2. The objective of this study was to prepare a new photocatalytic system by coating nanosized TiO2 particles on steel mesh support and using cold c...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/303961 |
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| author | Ming-Chin Chang Chin-Pao Huang Hung-Yee Shu Yung-Chen Chang |
| author_facet | Ming-Chin Chang Chin-Pao Huang Hung-Yee Shu Yung-Chen Chang |
| author_sort | Ming-Chin Chang |
| collection | DOAJ |
| description | High color and organic composition, the effluents from the textile dyeing and finishing industry, can be treated by photocatalytic oxidation with UV/TiO2. The objective of this study was to prepare a new photocatalytic system by coating nanosized TiO2 particles on steel mesh support and using cold cathode fluorescent light (CCFL) irradiation at 365 nm in a closed reactor for the oxidation of azo dye C.I. Orange G (OG). Various factors such as reaction time, coating temperature, TiO2 dosage, pH, initial dye concentration, and service duration were studied. Results showed efficient color removal of the OG azo dye by the photocatalytic system with TiO2-coated temperature at 150°C. The optimal TiO2 dosage for color removal was 60 g m−2. An acidic pH of 2.0 was sufficient for photocatalytic oxidation whereas basic condition was not. The rate of color removal decreased with increase in the initial dye concentration. The TiO2-coated steel mesh can be used repeatedly over 10 times without losing the photocatalytic efficiency. Results of FTIR and IC indicated the breakage of N=N bonds, with sulfate as the major and nitrite and nitrate as the minor products, which implied degradation of dye molecules. |
| format | Article |
| id | doaj-art-65255ae035d54184bbf91044c9b461c1 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-65255ae035d54184bbf91044c9b461c12025-02-03T01:22:12ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/303961303961A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange GMing-Chin Chang0Chin-Pao Huang1Hung-Yee Shu2Yung-Chen Chang3Institute of Environmental Engineering, Hungkuang University, 34 Chung-Chie Road, Shalu, Taichung 433, TaiwanDepartment of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USAInstitute of Environmental Engineering, Hungkuang University, 34 Chung-Chie Road, Shalu, Taichung 433, TaiwanInstitute of Environmental Engineering, Hungkuang University, 34 Chung-Chie Road, Shalu, Taichung 433, TaiwanHigh color and organic composition, the effluents from the textile dyeing and finishing industry, can be treated by photocatalytic oxidation with UV/TiO2. The objective of this study was to prepare a new photocatalytic system by coating nanosized TiO2 particles on steel mesh support and using cold cathode fluorescent light (CCFL) irradiation at 365 nm in a closed reactor for the oxidation of azo dye C.I. Orange G (OG). Various factors such as reaction time, coating temperature, TiO2 dosage, pH, initial dye concentration, and service duration were studied. Results showed efficient color removal of the OG azo dye by the photocatalytic system with TiO2-coated temperature at 150°C. The optimal TiO2 dosage for color removal was 60 g m−2. An acidic pH of 2.0 was sufficient for photocatalytic oxidation whereas basic condition was not. The rate of color removal decreased with increase in the initial dye concentration. The TiO2-coated steel mesh can be used repeatedly over 10 times without losing the photocatalytic efficiency. Results of FTIR and IC indicated the breakage of N=N bonds, with sulfate as the major and nitrite and nitrate as the minor products, which implied degradation of dye molecules.http://dx.doi.org/10.1155/2012/303961 |
| spellingShingle | Ming-Chin Chang Chin-Pao Huang Hung-Yee Shu Yung-Chen Chang A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G International Journal of Photoenergy |
| title | A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G |
| title_full | A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G |
| title_fullStr | A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G |
| title_full_unstemmed | A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G |
| title_short | A New Photocatalytic System Using Steel Mesh and Cold Cathode Fluorescent Light for the Decolorization of Azo Dye Orange G |
| title_sort | new photocatalytic system using steel mesh and cold cathode fluorescent light for the decolorization of azo dye orange g |
| url | http://dx.doi.org/10.1155/2012/303961 |
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