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Journal of the Mexican Chemical Society

Print version ISSN 1870-249X

Abstract

PERALTA-HERNANDEZ, Juan M.  and  GODINEZ, Luis A.. Electrochemical Hydrogen Peroxide Production in Acidic Medium Using a Tubular Photo-reactor: Application in Advanced Oxidation Processes. J. Mex. Chem. Soc [online]. 2014, vol.58, n.3, pp.348-355. ISSN 1870-249X.

This paper describes the results obtained in the design and characterization of a tubular electrochemical reactor. The set-up was employed for on-site hydrogen peroxide (H2O2) production in an acidic medium (pH 3) to promote three electrochemical advanced oxidation processes (EAOP): electro-Fenton (EF), photoelectro-Fenton (PEF) and photocatalysis treatment (PT). These processes were evaluated by their abilities to degrade a commercial dye, Orange-II (OG-II), in solution using total organic carbon (TOC) removal and high performance liquid chromatography (HPLC). To have free solutions of iron in the EF and PEF systems, a Nafion™ membrane with dispersed iron was prepared. For use in photocatalysis, electrodes with a large superficial area were prepared by coating carbon cloth fiber supports with titanium dioxide (TiO2) using the electrophoretic (EP) method. In this work, wastewater samples with a large number of microorganisms (coliform bacteria) were treated with this new reactor design.

Keywords : Electro-Fenton; Photoelecto-Fenton; Hydrogen peroxide; Photoelectrochemistry; Electrochemical reactor; Disinfection.

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