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On the mechanisms of phenol adsorption by carbons

Auteur(s)
Stoeckli, Fritz 
Institut de physique 
Hugi-Cleary, D.
Date de parution
2001
In
Russian Chemical Bulletin, Springer, 2001/50/11/2060-2063
Mots-clés
  • adsorption
  • phenol
  • activated carbons
  • surface area
  • microporosity
  • immersion calorimetry
  • adsorption

  • phenol

  • activated carbons

  • surface area

  • microporosity

  • immersion calorimetry...

Résumé
The removal of phenol and related compounds from dilute aqueous solutions by activated carbons corresponds to the coating of the micropore walls and of the external surface by a monolayer. This process is described by an analog of the Dubinin—Radushkevich—Kaganer equation. On the other hand, as suggested by immersion calorimetry at 293 K, in the case of concentrated solutions, the mechanism corresponds to the volume filling of the micropores, as observed for the adsorption of phenol from the vapor phase. The equilibrium is described by the Dubinin—Astakhov equation. It follows that the removal of phenol from mixtures with water depends on the relative concentrations, and the limiting factor for adsorption is either the effective surface area of the carbon, or the micropore volume.
Identifiants
https://libra.unine.ch/handle/123456789/17440
_
10.1023/A:1015080730126
Type de publication
journal article
Dossier(s) à télécharger
 main article: St_ckli_Fritz_-_On_the_mechanisms_of_phenol_adsorption_20071112.pdf (442.54 KB)
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