Adsorption equilibrium data for substituted phenols on activated carbon

Adsorption equilibria for 4 phenols were studied on Filtrasorb-400 activated carbon at 30 plus or minus 2 degree C. The Freundlich constants k and n were determined. A new model was developed using a thermodynamic approach, and an equation was obtained which is similar to the Freundlich model with c...

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Veröffentlicht in:Journal of chemical and engineering data 1992-04, Vol.37 (2), p.175-179
Hauptverfasser: Shirgaonkar, Irfan Z, Joglekar, Hemant S, Mundale, Vishwas D, Joshi, Jyeshtharaj B
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Sprache:eng
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Zusammenfassung:Adsorption equilibria for 4 phenols were studied on Filtrasorb-400 activated carbon at 30 plus or minus 2 degree C. The Freundlich constants k and n were determined. A new model was developed using a thermodynamic approach, and an equation was obtained which is similar to the Freundlich model with constants J and m. The constant J was correlated against the number of carbon atoms in the adsorbate and its measured solubility in water. The correlation resulted in a division of the phenols into two groups: polar molecules and nonpolar molecules, which showed opposite behavior with respect to the activity coefficient of the adsorbed molecule as interpreted from their Freundlich isotherms.
ISSN:0021-9568
1520-5134
DOI:10.1021/je00006a010