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Title: Effect of salt on the mechanism of adsorption of aromatics on activated carbon

Abstract

The effect of KCl on the adsorption of phenol, toluene, and benzene on activated carbon, with different degrees of surface oxygenation, was investigated. Different trends of salt effect were observed for each compound. The observed KCl effects were interpreted on the basis of electrical charge neutralization on the carbon surface and the adsorbate molecules, water adsorption, and the salt out effect. In particular, water adsorption was found to be crucial in reducing the adsorption capacity of the activated carbon. The influence of water adsorption was more pronounced on carbon surfaces with higher amounts of oxygen-containing groups. This was additionally confirmed by measurements using flow microcalorimetry.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Cincinnati, OH (US)
OSTI Identifier:
20000531
Report Number(s):
CONF-9808111-
Journal ID: ISSN 0743-7463; LANGD5
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 15; Journal Issue: 18; Conference: Third international symposium on effects of surface heterogeneity in adsorption and catalysis on solids, Torun (PL), 08/09/1998--08/16/1998; Other Information: PBD: 31 Aug 1999; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ACTIVATED CARBON; SORPTIVE PROPERTIES; PHENOL; TOLUENE; BENZENE; ADSORPTION; POTASSIUM CHLORIDES; CATALYTIC EFFECTS

Citation Formats

Arafat, H.A., Franz, M., and Pinto, N.G. Effect of salt on the mechanism of adsorption of aromatics on activated carbon. United States: N. p., 1999. Web. doi:10.1021/la9813331.
Arafat, H.A., Franz, M., & Pinto, N.G. Effect of salt on the mechanism of adsorption of aromatics on activated carbon. United States. doi:10.1021/la9813331.
Arafat, H.A., Franz, M., and Pinto, N.G. Tue . "Effect of salt on the mechanism of adsorption of aromatics on activated carbon". United States. doi:10.1021/la9813331.
@article{osti_20000531,
title = {Effect of salt on the mechanism of adsorption of aromatics on activated carbon},
author = {Arafat, H.A. and Franz, M. and Pinto, N.G.},
abstractNote = {The effect of KCl on the adsorption of phenol, toluene, and benzene on activated carbon, with different degrees of surface oxygenation, was investigated. Different trends of salt effect were observed for each compound. The observed KCl effects were interpreted on the basis of electrical charge neutralization on the carbon surface and the adsorbate molecules, water adsorption, and the salt out effect. In particular, water adsorption was found to be crucial in reducing the adsorption capacity of the activated carbon. The influence of water adsorption was more pronounced on carbon surfaces with higher amounts of oxygen-containing groups. This was additionally confirmed by measurements using flow microcalorimetry.},
doi = {10.1021/la9813331},
journal = {Langmuir},
issn = {0743-7463},
number = 18,
volume = 15,
place = {United States},
year = {1999},
month = {8}
}