1,4-Dioxane Degradation Using Persulfate Ion and Ag(I) Ion

Rosa María Felix-Navarro, Wai Lin Shui, Arturo Zizumbo-López, Sergio Pérez-Sicairos, Edgar Alonso Reynoso-Soto, José Heriberto Espinoza-Gómez

Abstract


The kinetics of oxidation of 1,4-dioxane by persulfate ion with Ag+ in aqueous solutions at various temperatures and concentrations of S2O82-, Ag+ and H2SO4, were investigated. Experimental results indicate that 1,4-dioxane degradation follows a pseudo-firstorder decay model and that reaction rate significantly accelerate by increasing temperature and concentration of oxidant, sulfuric acid and Ag+ ions up to 0.46 mM; for the range from 0.46-0.70 mM of Ag+ ions the reaction rate remains constant and at higher concentrations the reaction rate decreases. It was possible to degrade approximately 100% of 1,4-dioxane in less than one hour with the following conditions: [Ag+] = 0.46 mM, H2SO4] = 0.30 M and from a concentration of 25 mM Na2SO4.

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DOI: http://dx.doi.org/10.29356/jmcs.v57i2.224

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Journal of the Mexican Chemical Society (J. Mex. Chem. Soc.) Vol 62, No 2 (2018). Quarterly publication (April-June). Edited and distributed by Sociedad Química de México, A.C. Barranca del Muerto 26, Col. Crédito Constructor, Del. Benito Juárez, C.P. 03940, Mexico City. Phone: +5255 56626837; +5255 56626823 Contact: soquimex@sqm.org.mx http://www.sqm.org.mx Editor-in-Chief: Ignacio González-Martínez. Indexed Journal. Certificate of reserved rights for recurrent publications under digital distribution granted by the Instituto Nacional del Derecho de Autor (INDAUTOR): 04-2018-091118040000-203. Certificate of lawful title and content: Under procedure. ISSN-e granted by the Instituto Nacional del Derecho de Autor (INDAUTOR): 2594-0317. ISSN granted by the Instituto Nacional del Derecho de Autor (INDAUTOR): 1870-249X. Postal registration of printed matter deposited by editors or agents granted by SEPOMEX: IM09-0312 Copyright © Sociedad Química de México, A.C. Total or partial reproduction is prohibited without written permission of the right holder. The Figures/schemes quality and the general contents of this publication are full responsibility of the authors. Updated December 12th, 2018 by Adriana Vázquez (editorial assistant, e-mail: editor.jmcs@gmail.com), J. Mex. Chem. Soc., Sociedad Química de México, A.C.