2023
DOI: 10.3390/pr11030903
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Efficient Decolorization of Azo Dye Orange II in a UV-Fe3+-PMS-Oxalate System

Abstract: The decolorization of azo dye Orange II using a UVA-Fe3+-PMS-oxalate system was studied. A series of experiments was performed to investigate the effects of several variables, including the pH, PMS dosage, Fe3+ concentration, oxalate concentration, and coexisting anions. The results revealed that a lower pH facilitated the decolorization, and relatively high decolorization efficiency (97.5%) could be achieved within 5 min at pH 3.0. The electron paramagnetic resonance (ESR) and radical quenching experiments re… Show more

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Cited by 4 publications
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