Notice of RetractionReaction Mechanism and Influence Factors of Ethylenediamine Wastewater Treated by Supercritical Water Oxidation

Notice of Retraction

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The experiments were carried on the treatment of Ethylenediamine (EDA) wastewater by supercritical water oxidation (SCWO). The effect of factors including reaction temperature, pressure, residence time and O₂ stoichiometric ratio on the EDA decomposition were studied. And the radical reaction mechanism was used to explain the decomposition process of EDA by SCWO. The results found that SWCO can destruct the organic compounds in EDA wastewater into CO₂ and N₂. With increasing of reaction temperature, pressure, residence time, and decreasing of initial TOC concentration, TOC conversion increased. When the O₂ stoichiometric ratio is below 1.5, the change of O₂ stoichiometric ratio could influence the TOC conversion significantly. When the reaction temperature is above 535°C and residence time is over 120 s, the TOC conversion of EDA is above 98%.