RT Journal Article
T1 Development of a novel magnetic reactor based on nanostructured Fe3O4@PAA as heterogenous Fenton catalyst
A1 Gamallo Mirón, María
A1 Fernández Fernández, Lucía
A1 Vázquez Vázquez, Carlos
A1 Fondado Fondado, Alfonso
A1 Mira Pérez, Jorge
A1 Feijoo Costa, Gumersindo
A1 Moreira Vilar, María Teresa
K1 Magnetic separation unit
K1 Sequential batch reactor
K1 Fe3O4@PAA
K1 Water treatment
K1 Reactive Blue 19
K1 Response Surface Methodology
AB With the recent development of nanotechnology, magnetic nanoparticles (mNPs) have received increasing attention as potential heterogeneous Fenton catalysts in wastewater treatment applications, as an alternative to the conventional Fenton process using dissolved iron salts. Due to their superparamagnetic properties, Fe3O4 mNPs can be easily recovered and reused by applying a magnetic field. However, Fe3O4 mNPs have a marked tendency to form aggregates in water, leading to a decrease in their catalytic yield. To overcome these limitations, this work explores the catalytic activity of Fe3O4 coated with poly(acrylic acid) (Fe3O4@PAA) as stabilized Fenton heterogeneous nanocatalyst, in the degradation of C.I. Reactive Blue 19 (RB19). To maximize the catalytic potential of Fe3O4@PAA, an experimental design based on the Response Surface Methodology (RSM) has been developed to optimize the conditions of the Fenton process in terms of Fe3O4@PAA concentration (100–300 mg L−1) and H2O2 dose (100–400 mg L−1). Based on the results obtained, a novel sequential batch reactor (SBR) coupled to an external magnetic separation system has been developed, guaranteeing the complete retention of the mNPs in the system. This system allows the reuse of Fe3O4@PAA for at least 10 consecutive cycles, with a successful decolorization of RB19 after 4 h of treatment
PB MDPI
YR 2019
FD 2019
LK http://hdl.handle.net/10347/21798
UL http://hdl.handle.net/10347/21798
LA eng
NO Gamallo, M.; Fernández, L.; Vázquez-Vázquez, C.; Fondado, A.; Mira, J.; Feijoo, G.; Moreira, M.T. Development of a Novel Magnetic Reactor Based on Nanostructured Fe3O4@PAA as Heterogenous Fenton Catalyst. Catalysts 2019, 9, 18
NO This research was supported by two projects granted by Spanish Ministry of Science and Innovation: MODENA Project CTQ2016-79461-R and CLUSTERCAT Project MAT2015-67458-P, and Fundación Ramon Areces, Spain (Project CIVP18A3940). The authors belong to the Galician Competitive Research Groups ED431C-2017/22 and ED431C-2017/29, programme co-funded by FEDER, CRETUS Strategic Partnership (AGRUP2015/02) and AEMAT (ED431E 2018/08)
DS Minerva
RD 24 abr 2026