Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons

This paper studies the thermodynamic aspects of the processes of adsorption of phenol from dilute aqueous solutions on different commercial carbons, evaluating how to optimize the removal of this persistent contaminant. Two powdered activated carbons from two different companies were used: Tetrahedr...

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Autores principales: Húmpola, P. D., Odetti, H. S., Fertitta, Abel E., Vicente, José Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Química
Adsorption
Carbon
Energy
Phenol
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85364
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85364
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Adsorption
Carbon
Energy
Phenol
spellingShingle Química
Adsorption
Carbon
Energy
Phenol
Húmpola, P. D.
Odetti, H. S.
Fertitta, Abel E.
Vicente, José Luis
Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
topic_facet Química
Adsorption
Carbon
Energy
Phenol
description This paper studies the thermodynamic aspects of the processes of adsorption of phenol from dilute aqueous solutions on different commercial carbons, evaluating how to optimize the removal of this persistent contaminant. Two powdered activated carbons from two different companies were used: Tetrahedron Carbon (Andes Chemistry Lab., Mendoza, Argentina), and Norit (Norit Americas Inc., USA). Both specific surface areas were measured by means of the BET method. The adsorbate was high purity solid phenol (Fluka ® ≥ 99.5%). Experimental isotherms were determined at 293 K, 303 K and 313 K. The Freundlich and Sips theoretical models were used to fit the experimental data. Freundlich isotherm slightly diverges with the experimental results for higher equilibrium concentrations. Thermodynamic parameters were calculated and correlated with the adsorption behaviours. The values of the thermodynamic parameters obtained indicate an exothermic and spontaneous process for both carbons, and mainly for Norit. This is due to the fact that there might be chemically activated regions on the surface of the Norit carbon, which give rise to combined mechanisms of physisorption and chemisorption.
format Articulo
Articulo
author Húmpola, P. D.
Odetti, H. S.
Fertitta, Abel E.
Vicente, José Luis
author_facet Húmpola, P. D.
Odetti, H. S.
Fertitta, Abel E.
Vicente, José Luis
author_sort Húmpola, P. D.
title Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
title_short Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
title_full Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
title_fullStr Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
title_full_unstemmed Thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
title_sort thermodynamic analysis of adsorption models of phenol in liquid phase on different activated carbons
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85364
work_keys_str_mv AT humpolapd thermodynamicanalysisofadsorptionmodelsofphenolinliquidphaseondifferentactivatedcarbons
AT odettihs thermodynamicanalysisofadsorptionmodelsofphenolinliquidphaseondifferentactivatedcarbons
AT fertittaabele thermodynamicanalysisofadsorptionmodelsofphenolinliquidphaseondifferentactivatedcarbons
AT vicentejoseluis thermodynamicanalysisofadsorptionmodelsofphenolinliquidphaseondifferentactivatedcarbons
bdutipo_str Repositorios
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