RT journal article T1 Heterogeneous Photo-Fenton Reaction for Olive Mill Wastewater Treatment-Case of Reusable Catalyst A1 Agabo García, Cristina A1 Calderón, Naima A1 Hodaifa, Gassan A2 Ingeniería Química y Tecnología de Alimentos K1 olive mill wastewater K1 photo-fenton reaction K1 artificial UV light K1 heterogeneous reaction K1 catalyst recycling AB Heterogeneous catalysts can be an efficient and economical option for olive mill wastewater (OMW) treatment by an advanced oxidation process if they could be reused. In this work, OMW was treated using a heterogeneous photo-Fenton reaction (artificial ultraviolet light/H2O2/HFeO2). For this purpose, different concentrations of HFeO2 were tested: 0.04; 0.3; 0.8; 5.0; 10.0; 20.0; 30.0, and 50.0 g/L. The following operational conditions were chosen: pH = 3.0, temperature = 20 degrees C, agitation rate = 700 rpm. The experimental results showed high removal percentages of the main OMW characterization parameters at 50 g/L of HFeO2: %CODremoval = 62.8%; %total phenolic compounds (TPCs) = 88.9%. These results were also compared with those of other control oxidation systems, i.e., UV, H2O2, and UV/H2O2, which provided 35.5 and 56.1%; 46.2 and 74.0%; 48.0 and 76.8% removal, respectively. In addition, the catalyst was reused three times, recovering more than 90.5% of it. PB MDPI SN 2073-4344 YR 2021 FD 2021-05 LK http://hdl.handle.net/10498/25047 UL http://hdl.handle.net/10498/25047 LA eng NO This research was funded by Junta of Andalusia and Ministry of Economy and Competitiveness (Spain) "Project: Application of advanced oxidation technologies for treating of washing wastewaters of olive oil and olives, grant number AGR-7092". DS Repositorio Institucional de la Universidad de Cádiz RD 08-nov-2026