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Centro de Investigaciones Interdisciplinarias en Ciencias y Humanidades, UNAM; Instituto de Ciencias Aplicadas y Tecnología, UNAM; Centro de Nanociencias y Nanotecnología, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx
Guerra Hernández, Julia, et al. (2025). Remoción de metales pesados en agua empleando bioadsorbentes magnéticos. Mundo Nano. Revista Interdisciplinaria en Nanociencias y Nanotecnología; Vol. 18 Núm. 34, 2025: Bionanomateriales. Recuperado de https://repositorio.unam.mx/contenidos/4161393
Autor(es)
Guerra Hernández, Julia; Espinoza Jarrin, Johana
Tipo
Artículo de Investigación
Área del conocimiento
Multidisciplina
Título
Remoción de metales pesados en agua empleando bioadsorbentes magnéticos
Fecha
2024-09-11
Resumen
In this study, synthesis, characterization, and application of a pectin - magnetite bioadsorbent with magnetic properties for heavy metal removal in aqueous solutions were carried out. Pectin was obtained from Aloe Vera leaves whereas magnetite nanoparticles were incorporated through coprecipitation method. The material was characterized via FTIR, XRD, and SEM techniques. The maximum adsorption capacity for Lead (II) and Chromium (VI) ions was estimated through adsorption isotherms, resulting in 36,442 mg Pb/g and 2,254 mg Cr/g. This indicates a higher affinity from the bioadsorbent toward Lead (II). The removal of Lead (II) was also evaluated in a packed bed adsorber, both with fresh bed, and reused bed under an external magnetic field; adsorption capacities of 9,6 mg/g and 5,3 mg/g were obtained, respectively. The magnetic properties of the material allowed for modifications in the evaluated schemes, proposing new arrangements and comparing their efficiency in terms of adsorption capacity and dimensions. The most efficient schemes were the packed column and the coated tube (WCOT), where the adsorbent was annularly disposed on a coated wall.
Tema
magnetic bioadsorption; pectine; magnetite; heavy metals; adsorption isotherms; breakthrough curves; bioadsorción magnética; pectina; magnetita; metales pesados; isotermas de adsorción; curvas de ruptura
Idioma
spa
ISSN
ISSN electrónico: 2448-5691; ISSN impreso: 2007-5979
