Artículo
Immobilization of Zn(II) ions from contaminated biomass using ceramic matrices
Simón, Daiana Lucía
; Quaranta, Nancy Esther; Medici, Sandra Karina
; Costas, Agustín; Cristobal, Adrian Alberto
Fecha de publicación:
07/2019
Editorial:
Elsevier Science
Revista:
Journal of Hazardous Materials
ISSN:
0304-3894
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This article describes the adsorption of zinc ions from synthetic solutions using residual pine sawdust as an adsorbent and, subsequently, the use of clay ceramic pieces and contaminated biomass as metal immobilizers. The process of adsorption was carried out with a synthetic solution of ZnCl2 in contact with sawdust for a fixed time of 24 h. The mixture was stirred continually. The mixture was then filtered, and the metal ions not adsorbed by the biomass and present in the liquid phase were quantified. The physicochemical characteristics of the sawdust were determined by thermogravimetric and differential thermal analysis, infrared Fourier transform spectroscopy, fluorescence and X-ray diffraction, among others. The adsorption kinetics shows that the equilibrium was reached at 24 h. The most efficient ratio of the amount of biomass and the concentration of Zn(II) was 10 g/L of sawdust and 6.5 × 104 mg/L of metal, which was used to analyse the capacity of metal immobilization in the designed bricks. The values obtained for the apparent porosity, the loss of weight by ignition, the mechanical properties and the efficiency of retention, indicate that these bricks are suitable for use in civil construction.
Palabras clave:
Heavy metals
,
Sawdust adsorption
,
Clay bricks
,
Wastes
,
Immobilizing matrices
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Identificadores
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Simón, Daiana Lucía; Quaranta, Nancy Esther; Medici, Sandra Karina; Costas, Agustín; Cristobal, Adrian Alberto; Immobilization of Zn(II) ions from contaminated biomass using ceramic matrices; Elsevier Science; Journal of Hazardous Materials; 373; 7-2019; 687-697
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