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Comparative study on photocatalytic degradation of mono azo dye acid orange 7 and methyl orange under solar light irradiation

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Main Authors: Ong, Soon An, Dr., Ohm, Mar Min, Ho, Li Ngee, Dr., Wong, Yee Shian
Other Authors: saong@unimap.edu.my
Format: Article
Language:English
Published: Springer Science+Business Media B.V. 2013
Subjects:
Acid Orange 7
Azo dye
Kinetic model
Methyl orange
Mineralization
Photocatalytic degradation
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/30913
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spelling 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.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Acid Orange 7
Azo dye
Kinetic model
Methyl orange
Mineralization
Photocatalytic degradation
spellingShingle 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
_version_ 1643796415656230912
score 13.214268

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