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| Photo-assisted degradation of rhodamine B by Ferrocene-catalyzed heterogeneous Fenton-like reaction |
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Abstract Ferrocene(Fc) was used as a substitute for catalyst of heterogeneous Fenton-like reaction, ferrous ion (Fe2+). Consequently, a new UV/Fc/H2O2 heterogeneous Fenton-like reaction system was established. The decolourization capacity of the new reaction system to rhodamine B-contained simulated wastewater was experimentally examined. Fc could efficiently catalyze aqueous heterogeneous Fenton-like reaction. Accordingly, ?OH and the other similar reactive intermediates dominated the oxidative degradation of rhodamine B. Steady catalysis capacity of the new reaction system to the oxidative decolourazation process of rhodamine B was observed also. Even Fc was reclaimed and reused for three times, the decolourazation ration to the simulated wastewater was still higher than 99%. The proposed optimal processing conditions for decolourization of rhodamine B-contained wastewater were as follows: 1.5′10-2mol/L of H2O2, 0.13g/L of Fc and initial pH range was 2~6. To substitute Fc for Fe2+ catalyst of photo-assisted heterogeneous Fenton reaction was proved to be feasible.
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Received: 18 October 2012
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