Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation
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Springer Science+Business Media B.V.
2013
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my.unimap-309132014-06-27T09:37:10Z Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation Ong, Soon An, Dr. Ohm, Mar Min Ho, Li Ngee, Dr. Wong, Yee Shian saong@unimap.edu.my ohmohm84@gmail.com lnho@unimap.edu.my yswong@unimap.edu.my Acid Orange 7 Azo dye Kinetic model Methyl orange Mineralization Photocatalytic degradation Link to publisher's homepage at http://link.springer.com/ The objective of this study was to investigate and compare the kinetic photocatalytic degradation of mono azo dyes Acid Orange 7 (AO7) and Methyl Orange (MO) under solar light irradiation with titanium dioxide (TiO 2) as a photocatalyst. Several operational parameters affecting the photocatalytic degradation of dye were evaluated such as different azo dyes, initial dye concentration, TiO 2 dosage, with and without aeration and sunlight irradiation. The data obtained was well fitted with the Langmuir- Hinshelwood kinetic model. It was observed that the pseudo-first-order rate constants for AO7 were higher than MO in all cases, indicating that the photocatalytic degradation of AO7 was easier and more rapid than MO. The analysis of chemical oxygen demand and UV-Vis spectra shows the AO7 and MO not only being decolorized due to the breakdown of azo bond but also being mineralized if the azo dye solutions were continually exposed to solar light irradiation after the decolorization process 2013-12-31T07:35:25Z 2013-12-31T07:35:25Z 2012-09 Article Water, Air, and Soil Pollution, vol. 223(8), 2012, pages 5483-5493 0049-6979 http://link.springer.com/article/10.1007%2Fs11270-012-1295-1 http://hdl.handle.net/123456789/30913 en Springer Science+Business Media B.V. |
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Universiti Malaysia Perlis |
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Universiti Malaysia Perlis |
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| language |
English |
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Acid Orange 7 Azo dye Kinetic model Methyl orange Mineralization Photocatalytic degradation |
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Acid Orange 7 Azo dye Kinetic model Methyl orange Mineralization Photocatalytic degradation Ong, Soon An, Dr. Ohm, Mar Min Ho, Li Ngee, Dr. Wong, Yee Shian Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| description |
Link to publisher's homepage at http://link.springer.com/ |
| author2 |
saong@unimap.edu.my |
| author_facet |
saong@unimap.edu.my Ong, Soon An, Dr. Ohm, Mar Min Ho, Li Ngee, Dr. Wong, Yee Shian |
| format |
Article |
| author |
Ong, Soon An, Dr. Ohm, Mar Min Ho, Li Ngee, Dr. Wong, Yee Shian |
| author_sort |
Ong, Soon An, Dr. |
| title |
Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| title_short |
Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| title_full |
Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| title_fullStr |
Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| title_full_unstemmed |
Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| title_sort |
comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation |
| publisher |
Springer Science+Business Media B.V. |
| publishDate |
2013 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/30913 |
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1643796415656230912 |