González-Rodríguez, JorgeConde, Júlio J.Vargas Osorio, ZulemaVázquez Vázquez, CarlosPiñeiro Redondo, YolandaRivas Rey, JoséFeijoo Costa, GumersindoMoreira Vilar, María Teresa2023-11-082023-11-082023-10-21Journal of Environmental Management 349 (2024) 1194610301-4797http://hdl.handle.net/10347/31217The presence of organic micropollutants in water bodies represents a threat to living organisms and ecosystems due to their toxicological effects and recalcitrance in conventional wastewater treatments. In this context, the application of heterogeneous photo-Fenton based on magnetite nanoparticles supported on mesoporous silica (SBA15) is proposed to carry out the non-specific degradation of the model compounds ibuprofen, carbamazepine, hormones, bisphenol A and the dye ProcionRed®. The operating conditions (i.e., pH, catalyst load and hydrogen peroxide concentration) were optimized by Response Surface Methodology (RSM). The paramagnetic properties of the nanocatalysts allowed their repeated use in sequential batch operations with catalyst losses below 1%. The feasibility of the process was demonstrated as removal rates above 90% after twelve accomplished after twelve consecutive cycles. In addition, the contributions of different reactive oxygen species, mainly •OH, were analyzed together with the formation of by-products, achieving total mineralization values of 15% on average.eng©2023 The Authors. Published by Elsevier Ltd.This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)Atribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/ReusabilityDegradation pathwaysKineticsMagnetic nanoparticlesLEDSupported catalystsjournal article10.1016/j.jenvman.2023.119461open access