Effects of the solute ionization on the adsorption of aromatic compounds from dilute aqueous solutions by activated carbon

Haghseresht, F., Nouri, S. and Lu, G. Q. (2002) Effects of the solute ionization on the adsorption of aromatic compounds from dilute aqueous solutions by activated carbon. Langmuir, 18 5: 1574-1579. doi:10.1021/la0109031


Author Haghseresht, F.
Nouri, S.
Lu, G. Q.
Title Effects of the solute ionization on the adsorption of aromatic compounds from dilute aqueous solutions by activated carbon
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
Publication date 2002-01-01
Sub-type Article (original research)
DOI 10.1021/la0109031
Volume 18
Issue 5
Start page 1574
End page 1579
Total pages 6
Place of publication USA
Publisher American Chemical Society
Language eng
Subject C1
291804 Nanotechnology
660199 Energy transformation not elsewhere classified
Abstract Adsorption of four dissociating aromatic compounds and one nondissociating compound on a commercial activated carbon is investigated systematically. All adsorption experiments were carried out in pH-controlled aqueous solutions. The adsorption isotherms are fitted to the binary homogeneous Langmuir model, where the concentrations of the molecular and the ionic species in the liquid phase are expressed in terms of the sum of the two and the degree of solute ionization. Examination of the relationships between the solution pH, the degree of ionization of the solutes, and the model parameters is found to give new insights into the adsorption process. Furthermore, this is used to correlate the variation of the monolayer capacity with the solution pH.
Keyword Chemistry, Physical
Weak Organic Electrolytes
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: Institute for Molecular Bioscience - Publications
 
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Created: Wed, 15 Aug 2007, 04:18:09 EST