Publicado

2018-04-01

Study of agglomeration and magnetic sedimentation of Glutathione@Fe3O4 nanoparticles in water medium

Estudio de aglomeración y sedimentación magnética de nanopartículas de Glytathione@Fe3O4 en medio acuoso

Palabras clave:

Glutathione, magnetic nanoparticles, aggregation kinetics, magnetic sedimentation (en)
Glutation, nanopartículas magnéticas, cinética de agregación, sedimentación magnética (es)

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Autores/as

The study of the efficiency of the magnetic separation of nanoparticles in environment is important for its implementation in the remediation of water bodies. In this work the sedimentation dynamics of Glutathione@MNPs were evaluated for water systems with addition of calcium, zinc and sodium ions in a concentration range of 0-40 mg/L in the presence and absence of a vertical magnetic field of 0.2 T. Also, critical coagulation concentrations (CCC) were determined based on the DLVO theory. Particles stability in the absence of metal ions higher than 8 weeks could be observed, whereas in the presence of these ions the stability was reduced to 8 weeks. Separation of the material from the aqueous phase higher than 90% was obtained both for the presence of ions and for the material after the addition of heavy metals such as Hg and Cr.

El estudio de la eficiencia de la separación magnética de nanopartículas del medio ambiente es importante para su implementación en la remediación de cuerpos de agua. En este trabajo se evaluó la dinámica de sedimentación de los Glutatión@MNPs en sistemas de agua con adición de iones de calcio, zinc y sodio en un rango de concentración de 0-40 mg/L en presencia y ausencia de un campo magnético vertical de 0,2 T. Las concentraciones críticas de coagulación (CCC) se determinaron basándose en la teoría de DLVO. Se observó estabilidad de la partícula en ausencia de iones metálicos mayores de 8 semanas, mientras que con la presencia de estos iones la estabilidad se redujo a 8 semanas. La separación del material de la fase acuosa superior al 90% se obtuvo tanto para la presencia de iones como para el material después de la adición de metales pesados tales como Hg y Cr.

Citas

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