RT Journal Article
T1 LED-driven photo-Fenton process for micropollutant removal by nanostructured magnetite anchored in mesoporous silica
A1 González-Rodríguez, Jorge
A1 Conde, Júlio J.
A1 Vargas Osorio, Zulema
A1 Vázquez Vázquez, Carlos
A1 Piñeiro Redondo, Yolanda
A1 Rivas Rey, José
A1 Feijoo Costa, Gumersindo
A1 Moreira Vilar, María Teresa
K1 Reusability
K1 Degradation pathways
K1 Kinetics
K1 Magnetic nanoparticles
K1 LED
K1 Supported catalysts
AB The 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.
PB Elsevier
SN 0301-4797
YR 2023
FD 2023-10-21
LK http://hdl.handle.net/10347/31217
UL http://hdl.handle.net/10347/31217
LA eng
NO Journal of Environmental Management 349 (2024) 119461
NO This research was supported by HP-NANOBIO [PID2019-111163RB-I00] and MAGDEMON [PID2020-112626RB] projects, funded by MCIN/AEI/10.13039/501100011033 and SPOTLIGHT [PDC2021-121540-I00] project, funded by MCIN/AEI/10.13039/501100011033 and European Union NextGenerationEU/PRTR. J.G.-R. thanks MCIN/AEI/10.13039/501100011033 for their FPU predoctoral fellowship [FPU19/00461] and J.J.C. thanks Xunta de Galicia for his postdoctoral fellowship [ED481B-2021/015]. The authors belong to the Galician Competitive Research Groups (GRC) ED431C-2021/16 and ED432C-2021/37, co-funded by FEDER (EU)
DS Minerva
RD 27 abr 2026