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ABSTRACT
It was conducted to evaluate the efficiency for oxidations of a typical azo dye by advanced oxidation such as Fenton process and Fenton-like process. The ratio parameters affecting the decolorization efficiency of C.I. Basic Red 22 such as initial concentration of Fe2+, Fe3+ and H2O2, initial pH of dye solution, and reaction temperature were investigated. The results showed that the decolorization efficiency of C.I. Basic Red 22 in Fenton oxidation was much higher than that of the Fenton-like oxidation in the initial stages and the decolorization efficiency was similar but trends to the similar level for both systems after 45 min. For the two oxidation systems, the decolorization efficiency of C.I. Basic Red 22 depended on [Dye]0, [Fe2+]0 or [Fe3+]0, [H2O2]0, pH, and temperature.
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Acknowledgment
The author gratefully acknowledges the financial support from the Innovation Program of College student in Zhejiang Province (2010) and the Innovation Program of College student in Shaoxing University.
