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- W2311142362 abstract "1,4-Dioxane is well known as a bio-refractory organic material that is difficult to degrade in wastewater by typical treatment processes. The Fered-Fenton process, which is a kind of electrochemical advance oxidation processes, was applied herein to the degradation of 1,4-dioxane in a simulated wastewater sample. An activated carbon sheet was used as a cathodic electrode. Degradation experiments were carried out in a two compartment cell under constant cathodic potential. 1,4-Dioxane at concentrations of 40 and 100 mg L−1 could be degraded to less than 0.5 mg L−1 in 150 and 360 min, respectively. The rate of reduction of Fe3+ on the cathode was proportional to the Fe3+ concentration under a constant cathode potential and was not affected by the presence of 1,4-dioxane and degradation by-products. A kinetic model for 1,4-dioxane degradation was constructed by assuming the participation of three active radicals, i.e., OH, HO2, and SO4−. Changes in the concentration of 1,4-dioxane and H2O2 could be adequately fitted to the experimental data under various conditions. The determined kinetic parameters clarify that the reactivity of 1,4-dioxane with OH is much higher than that of the degradation by-products. From the simulation results, it was found that the concentration of OH increases with time in the latter stage of degradation. Accumulation of Fe2+ was also observed, maintaining the Fenton reaction at almost constant rate throughout the reaction. H2O2 was more strongly consumed by Fe2+, OH, and SO4− in the latter stage, even though the H2O2 concentration was much less than that in the initial stage." @default.
- W2311142362 created "2016-06-24" @default.
- W2311142362 creator A5036383115 @default.
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- W2311142362 date "2016-07-01" @default.
- W2311142362 modified "2023-10-18" @default.
- W2311142362 title "Fered-Fenton process for the degradation of 1,4-dioxane with an activated carbon electrode: A kinetic model including active radicals" @default.
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- W2311142362 doi "https://doi.org/10.1016/j.cej.2016.03.090" @default.
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