Comparative efficiencies of the decolourisation of Methylene Blue using Fenton's and photo-Fenton's reactions.
The decolourisation and mineralization of Methylene Blue azo dye (MB) under Fenton's and photo-Fenton's conditions have been studied. Some parameters, such as initial concentrations of iron (Fe(2+)) and fixed hydrogen peroxide (H(2)O(2)), were evaluated to find the optimal conditions for the efficient degradation of azo dye. The experimental assays showed better efficiency for the photo-Fenton's system. Pseudo-first order degradation rate constants were obtained from batch experimental set up. It is suggested that photo-Fenton's reactions are viable processes for treatment of azo dye MB, according to the high levels of colour (UV(665)) and total organic carbon (TOC) removal.
Universidad Autónoma de Nuevo León, Av. Universidad s/n. Cd. Universitaria, San Niclolás de los Garza, NL, México.
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D
Melgoza
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A
Hernández-Ramírez
J M
JM
Peralta-Hernández