Removal of Persistent Organic Compounds and Total Nitrogen in Wastewater by Ozonation Combined with Electrolysis Using Two-Compartment Electrolytic Flow Cell with Solid Electrolyte

The operational conditions for the electro-advanced oxidation process using the Fenton-type reaction of the ferrous ion (Fe 2+ ) and hypochlorous acid were discussed in this research. In the process, hypochlorous acid is supplied by the anodic oxidation of the chloride ion (Cl -) and Fe 2+ is supplied by the cathodic reduction of the ferric ion (Fe 3+ ). 1, 4-Dioxane was used as the hydroxyl radical probe. As the results of the 1, 4-dioxane degradation test, higher current efficiencies of 1, 4-dioxane degradation were observed at pHs of up to 3.0, current densities of up to 2.8 mA • cm -2 , Clconcentrations of 10-200 mM, and iron concentrations of 1.0-4.0 mM. In addition, the experimental results showed that the Fe 3+ , the initial iron species was more effective than Fe 2+ , because excessive Fe 2+ acted as a radical scavenger. A current efficiency of 74.2% was achieved at pH 2.5 as well as a current density of 2.8 mA • cm -2 at an initial Fe 3+ concentrations of 1.0 mM and an initial Cl -concentrations of 100 mM; the current efficiency achieved using Fe 2+ instead of Fe 3+ was only 44.9%.

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Removal of Persistent Organic Compounds and Total Nitrogen in Wastewater by Ozonation Combined with Electrolysis Using Two-Compartment Electrolytic Flow Cell with Solid Electrolyte

Cited by 2 publications

References 24 publications

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Cleaner production of vanadium oxides by cation-exchange membrane-assisted electrolysis of sodium vanadate solution

Effects of Several Factors on Operation of an Electro-Advanced Oxidation Process using Fe2+/HOCl System

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