Cinética y Mecanismos de Adsorción de Plomo (II) Usando Zeolita Gis-NaP Obtenida a Partir de Residuos de Ladrillo

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Resumen

This article reports the results of an investigation carried out to evaluate the kinetics and adsorption mechanisms of Pb2+, of a synthetic zeolite of the Gis-NaP type that was obtained from brick residues and that was characterized by various analysis techniques. Treatment of the experimental results showed that the pseudo-first order model (R2 = 0,9983) better describes the adsorption kinetics. The Pb2 + adsorption mechanism is better explained by the Freundlich isotherm which shows perfect fit (R2 = 0,980). With a contact time of 8 hours, the saturation of the zeolitic material is achieved, reaching an adsorption of 109,8 mg/g of Pb2+. The maximum adsorption capacity 124,4 mg/g (95,1%) was obtained for an initial concentration of 872,0 mg/L. According to the results obtained, it is concluded that the Gis-NaP zeolite has a high removal efficiency of Pb2+ and that it can be applied in the treatment of mining and/or industrial effluents.

Título traducido de la contribuciónKinetics and Adsorption Mechanisms of Lead (II) Using Gis-NaP Zeolite Obtained from Brick Waste
Idioma originalEspañol
Páginas (desde-hasta)63-70
Número de páginas8
PublicaciónRevista Politecnica
Volumen50
N.º2
DOI
EstadoPublicada - 4 ago. 2022

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© 2022, Escuela Politecnica Nacional. All rights reserved.

Palabras clave

  • Gis-NaP zeolite
  • adsorption isotherms
  • adsorption kinetics
  • cation exchange
  • hydrothermal treatment

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