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Type: Artigo de periódico
Title: Removal of EDTA by UV-C/hydrogen peroxide
Author: Baeza, C
Rossner, A
Jardim, WF
Liter, MI
Mansilla, HD
Abstract: Mineralization of a 5 mM EDTA solution at pH 3 was evaluated via TOC removal under UV-C irradiation in the presence of H(2)O(2) at various conditions. The highest TOC removal (78%) was obtained using a 40:1 H(2)O(2)/EDTA molar ratio, after 540 min irradiation. However, a 20:1 ratio gave slightly lower results, being economically more attractive. Best results of TOC removal were obtained under pH controlled conditions. Addition of TiO(2) (1 g l(-1)) was detrimental, even in the presence of H(2)O(2), indicating that at this concentration, TiO(2) inhibits the mineralization, probably by scattering or by screening of the light.
Subject: advanced oxidation technologies
UV/hydrogen peroxide
UV/TiO(2) heterogeneous photocatalysis
Country: Inglaterra
Editor: Taylor & Francis Ltd
Citation: Environmental Technology. Taylor & Francis Ltd, v. 24, n. 10, n. 1277, n. 1281, 2003.
Rights: fechado
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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