Decolorisation of Methyl Orange Solution with KIO3 under UV Irradiation

Tao Wang; Xi Yang He; Jian Zhang Li; Jun Bo Zhong; Feng Chun Zeng; Wei Hu

doi:10.4028/www.scientific.net/AMM.178-181.653

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 178-181Decolorisation of Methyl Orange Solution with KIO3...

Decolorisation of Methyl Orange Solution with KIO₃ under UV Irradiation

Abstract:

This report has shown that the dye of Methyl Orange (MO) in water can be decolorized effectively in the presence of KIO₃ under UV irradiation. Decolorisation efficiency of MO increases as the loading of KIO₃ increases and has no an optimal amount of KIO₃ in this case. The kinetic result shows that the decolorisation reaction is a pseudo first-order reaction when the concentration of MO is below 10 mgL-1. The influences of the pH value and hydroxyl radical scavengers on the decolorisation reaction were investigated in detailed. Several observations indicate that the mechanism is not the attack of hydroxyl radicals in MO decolorisation with KIO₃ under UV irradiation. More considerations should be focused on the underlying possible decolorisation mechanism of MO with KIO₃ under UV irradiation.

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Periodical:

Applied Mechanics and Materials (Volumes 178-181)

Pages:

653-656

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.178-181.653

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Online since:

May 2012

Authors:

Tao Wang, Xi Yang He, Jian Zhang Li, Jun Bo Zhong, Feng Chun Zeng, Wei Hu

Keywords:

Decolorization, Methyl Orange (MO), Potassium Iodate, Wastewater Treatment

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