Cobalt Ferrite (CoFe 2 O 4 ) Spinel as a New Efficient Magnetic Heterogeneous Fenton-like Catalyst for Wastewater Treatment

Maria Alice Prado Cechinel, João Lucas Nicolini, Pedro Monteiro Tápia, Edgar Andrés Chavarriaga Miranda, Sarah Eller, Tiago Franco de Oliveira, Fabiano Raupp-Pereira, Oscar Rubem Klegues Montedo, Tiago Bender Wermuth and Sabrina Arcaro ()
Additional contact information
Maria Alice Prado Cechinel: Department of Chemical and Food Engineering (EQA), Federal University of Santa Catarina (UFSC), Florianópolis 88040-900, Brazil
João Lucas Nicolini: Biomaterials and Nanostructured Materials Group, Technical Ceramics Laboratory (CerTec), Postgraduate Program in Materials Science and Engineering, The University of Southern Santa Catarina (UNESC), Av. Universitária 1105, Criciuma 88806-000, Brazil
Pedro Monteiro Tápia: Biomaterials and Nanostructured Materials Group, Technical Ceramics Laboratory (CerTec), Postgraduate Program in Materials Science and Engineering, The University of Southern Santa Catarina (UNESC), Av. Universitária 1105, Criciuma 88806-000, Brazil
Edgar Andrés Chavarriaga Miranda: Department of Basic Sciences, Universidad Católica Luis Amigó, Transversal 51 A # 67B-90, Medellín 050034, Colombia
Sarah Eller: Pharmacosciences Department, Federal University of Health Sciences of Porto Alegre, Porto Alegre 90050-170, Brazil
Tiago Franco de Oliveira: Pharmacosciences Department, Federal University of Health Sciences of Porto Alegre, Porto Alegre 90050-170, Brazil
Fabiano Raupp-Pereira: Biomaterials and Nanostructured Materials Group, Technical Ceramics Laboratory (CerTec), Postgraduate Program in Materials Science and Engineering, The University of Southern Santa Catarina (UNESC), Av. Universitária 1105, Criciuma 88806-000, Brazil
Oscar Rubem Klegues Montedo: Biomaterials and Nanostructured Materials Group, Technical Ceramics Laboratory (CerTec), Postgraduate Program in Materials Science and Engineering, The University of Southern Santa Catarina (UNESC), Av. Universitária 1105, Criciuma 88806-000, Brazil
Tiago Bender Wermuth: Biomaterials and Nanostructured Materials Group, Technical Ceramics Laboratory (CerTec), Postgraduate Program in Materials Science and Engineering, The University of Southern Santa Catarina (UNESC), Av. Universitária 1105, Criciuma 88806-000, Brazil
Sabrina Arcaro: Biomaterials and Nanostructured Materials Group, Technical Ceramics Laboratory (CerTec), Postgraduate Program in Materials Science and Engineering, The University of Southern Santa Catarina (UNESC), Av. Universitária 1105, Criciuma 88806-000, Brazil

Sustainability, 2023, vol. 15, issue 20, 1-20

Abstract: For the first time, cobalt ferrite spinel (CoFe 2 O 4 ) was used as a catalyst in the Fenton process for Remazol Red RR dye degradation in water. CoFe 2 O 4 was synthesized via gel combustion using tris(hydroxymethyl)aminomethane as an alternative fuel in one step with a ratio of Ψ = 0.8. Its structural, surface optics, magnetic properties, and the optimal conditions of the Fenton reagents for dye degradation were evaluated. The saturation magnetization and remanence (Ms and Mr, respectively) for the as-prepared powder were 65.7 emu/g and 30.4 emu/g, respectively, and the coercivity (Hc) was 1243 Oe, indicating its ferromagnetic nature and suitability as a magnetic catalyst. Red Remazol RR dye degradation tests were performed using the Fenton process to evaluate the influence of the catalyst dosage and H 2 O 2 concentration. The tests were performed in a batch reactor in the dark with constant agitation for 24 h. The best result was obtained using 1 g/L of catalyst with a dye degradation of 80.6%. The optimal concentration of H 2 O 2 (1.0 M) resulted in 96.5% dye degradation. Nanoparticle recyclability testing indicated that the material could be satisfactorily reused as a catalyst for at least three cycles. The potential use of the CoFe 2 O 4 synthesized in this study as a catalyst for dye degradation by the Fenton process was demonstrated.

Keywords: spinel ferrites; cobalt ferrite; advanced oxidative process; textile dye; reuse; degradation pathway (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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