Removal of EDTA by UV-C/hydrogen peroxide

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 H2O2 at various conditions. The highest TOC removal (78%) was obtained using a 40:1 H2O2/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 TiO2 (1 g l-1) was detrimental, even in the presence of H2O2, indicating that at this concentration, TiO2 inhibits the mineralization, probably by scattering or by screening of the light.

Más información

Título según WOS: Removal of EDTA by UV-C/hydrogen peroxide
Título según SCOPUS: Removal of EDTA by UV-C/hydrogen peroxide
Título de la Revista: ENVIRONMENTAL TECHNOLOGY
Volumen: 24
Número: 10
Editorial: TAYLOR & FRANCIS LTD
Fecha de publicación: 2003
Página de inicio: 1277
Página final: 1281
Idioma: English
Notas: ISI, SCOPUS