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Open AccessFeature PaperArticle

Water Decontamination with Magnetic Particles by Adsorption and Chemical Degradation. Influence of the Manufacturing Parameters

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Departamento de Ingeniería Química y Textil, Facultad de Ciencias Quimicas, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
2
LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
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Departamento de Geología, Facultad de Ciencias, Universidad de Salamanca, Pza. de Los Caídos s/n, 37008 Salamanca, Spain
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Servicio de Difracción de Rayos-X, Universidad de Salamanca, Pza. de Los Caídos s/n, 37008 Salamanca, Spain
*
Author to whom correspondence should be addressed.
Materials 2020, 13(10), 2219; https://doi.org/10.3390/ma13102219
Received: 7 April 2020 / Revised: 7 May 2020 / Accepted: 8 May 2020 / Published: 12 May 2020
Many different processes for manufacturing of magnetic particles are present in scientific literature. However, the large majority are not able to be applied to large-scale real operations. In this study, we present an experiment undertaken to determine advisable values and options for the main variables and factors for the application of the reverse co-precipitation method to produce magnetic particles for real environmental applications. In such, we have tried a conjugation of values/factors that has led to 12 main experiments and production of 12 different particles. After an initial study concerning their main characteristics, these 12 different particles were applied for the sorption removal of COD from real wastewater samples (efficiencies between 70% and 81%) and degradation of Methylene blue by Fenton reaction (degradation efficiencies up to 100%). The main conclusion from this work is that the best set of values depends on the target environmental application, and this set of values were determined for the two applications studied. View Full-Text
Keywords: magnetic particles; synthesis; optimized values; large-scale operations; COD removal; wastewater treatment; colorant degradation; sorption; Fenton reaction magnetic particles; synthesis; optimized values; large-scale operations; COD removal; wastewater treatment; colorant degradation; sorption; Fenton reaction
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Augusto, P.A.; Castelo-Grande, T.; Vargas, D.; Hernández, L.; Merchán, L.; Estevez, A.M.; Gómez, J.; Compaña, J.M.; Barbosa, D. Water Decontamination with Magnetic Particles by Adsorption and Chemical Degradation. Influence of the Manufacturing Parameters. Materials 2020, 13, 2219.

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