AJAC  Vol.5 No.8 , June 2014
Heterogeneous Fenton Catalyst for the Efficient Removal of Azo Dyes in Water
ABSTRACT
Heterogeneous Fenton/photo Fenton type processes using a Fe-exchanged zeolite of Y-type have been applied for the degradation of a model textile synthetic water based on Black B azodye. Research work has been directed to compare process efficiency and to establish their advantages over corresponding homogenous Fenton type processes. By optimizing the amount of reactants and process conditions, a complete decolorization of the effluent and a reduction greater than 80 per cent in the total organic carbon content is achieved. The influence of solar radiation on the heterogeneous process has been also studied. Homogeneous and heterogeneous Fenton processes yielded similar decolorization and mineralization, but the concentration of Fe ions in the bulk after the treatment was not significant in the latter case. Moreover, the catalyst support can be reused in successive cycles without significant loss of effectiveness. The use of solar radiation as a source of energy for operating the process accelerates the decomposition of azodye, making the process economical and environmentally sustainable.

Cite this paper
Blanco, M. , Martinez, A. , Marcaide, A. , Aranzabe, E. and Aranzabe, A. (2014) Heterogeneous Fenton Catalyst for the Efficient Removal of Azo Dyes in Water. American Journal of Analytical Chemistry, 5, 490-499. doi: 10.4236/ajac.2014.58058.
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