Degradation of Ethylene Glycol Through Photo-Fenton Heterogeneous System

• Published in: Revista ingenierías (Medellín, Colombia) Vol. 18; no. 35; pp. 91 - 109
• Main Authors: Arriola, Erasmo, Berrío Mesa, Eliana, Barrera Zapata, Rolando, Álvarez Gómez, William Fernando, Ortíz Frade, Luis Antonio, Hernández Maldonado, José Alfredo, Zepeda Partida, Trino Armando, Ardila Arias, Alba Nelly
• Format: Journal Article
• Language: English; Portuguese
• Published: Universidad de Medellín 01.12.2019
• Subjects: doped TiO2; ENGINEERING, MULTIDISCIPLINARY; ethylene glycol; etilenglicol; etilenoglicol; Fenton; Fenton system; fotodegradación heterogenea; fotodegradação heterogênea; gel; gel method; heterogeneous photodegradation; impregnación húmeda incipiente; impregnação incipiente do ponto úmido; incipient wet impregnation; método dol; photo; processo sol; sistema foto; sol; TiO2 dopado; TiO2 dopado com Ferro; Fe-doped TiO2; etilenoglicol; sistema foto-Fenton; fotodegradación heterogenea; photo-Fenton system; fotodegradação heterogénea; etilenglicol; TiO2 dopado com Ferro; processo sol-gel; incipient wet impregnation; impregnação incipiente do ponto úmido; heterogeneous photodegradation; Fe-TiO2 dopado; impregnación húmeda incipiente; ethylene glycol; sol-gel method; método dol-gel
• ISSN: 1692-3324; 2248-4094; 2248-4094
• DOI: 10.22395/rium.v18n35a6

This work describes the ethylene glycol degradation in a photo-Fenton heterogeneous system. Iron-doped TiO2 photocatalysts prepared by different methods (incipient wet impregnation and sol-gel method), as well as the corresponding un-doped material were examined in this process. Different values of initial pH and H2O2 concentration were tested during the experiments. A lower photoactivity was observed for the un-doped materials than for the Fe-doped materials. Optimum results of initial pH and H2O2 concentrations were found to be 3.0 and 1,000 mg/L, respectively.  Furthermore, the highest degradation percentage of ethylene glycol (61 %) was achieved for the material synthetized by sol-gel method. Such catalytic performance is explained on the basis of structural/morphological and electronic characterization results, reached by XRD, UV-vis DRS and XPS techniques. To the best of our knowledge, this is the first report related with the ethylene glycol degradation using Iron-doped TiO2 in a photo-Fenton heterogeneous system.