Kinetics of Ethylenediamine Wastewater Oxidation in Supercritical Water

Jia Ming Zhang; Chun Yuan Ma

doi:10.4028/www.scientific.net/AMR.531.516

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 531Kinetics of Ethylenediamine Wastewater Oxidation...

Kinetics of Ethylenediamine Wastewater Oxidation in Supercritical Water

Abstract:

The decompositon of ethylenediamine (EDA) in supercritical water oxidation (SCWO) were investigated. The experiments were conducted in an isothermal and vertical continuous plug-flow reactor at 375-500°C, 25 MPa, residence time of 2-80 s, and excess oxygen of 150%. It was found that yields of nitrous oxide, nitrogen, and the denitrification rate increased as temperature and residence time increased. The kinetics for denitrification of EDA was described by a rate law involving first order reaction. The results calculated from kinetics equation reconciled the experimental data.

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Advanced Materials Research (Volume 531)

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516-519

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https://doi.org/10.4028/www.scientific.net/AMR.531.516

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June 2012

Authors:

Jia Ming Zhang, Chun Yuan Ma

Keywords:

Denitrification, Ethylenediamine, Nitrous Oxide, Scwo

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