Nonenzymic Degradation and Decolorization of Recalcitrant Compounds
The ability of a nonenzymic system containing CuII/pyridine/peroxide to decolorize structurally different synthetic dyes and to degrade selected PAHs was followed. An intense and rapid (after 1 h) decolorization has been obtained with phenol red (89%), Evans blue (95%) eosin yellowish (84%) and Poly B-411 (92%). The use of radical scavengers, thiourea and Superoxide dismutase, showed that hydroxyl radicals rather than Superoxide anions are involved in the decolorization. The intensive degradation of PAHs has been obtained after 24 h. Benzo[a]pyrene has also been degraded by the CuII/H2O2 peroxide system.
KeywordsEvans Blue Ligninolytic Enzyme Cumene Hydroperoxide Fenton Reagent Peroxide System
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