Single-solute and bisolute sorption of phenol and trichloroethylene from aqueous solution onto modified montmorillonite and application of sorption models

The single-solute and bisolute sorption behaviour of phenol and trichloroethylene, two organic compounds with different structures, onto cetyltrimethylammonium bromide (CTAB)-montmorillonite was studied. The monolayer Langmuir model (MLM) and empirical Freundlich model (EFM) were applied to the sing...

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Bibliographic Details
Published in:Water science and technology 2013-01, Vol.67 (1), p.152-158
Main Authors: WU, C. D, WANG, L, HU, C. X, HE, M. H
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Bentonite - chemistry
Cetyltrimethylammonium bromide
Exact sciences and technology
Langmuir-Blodgett films
Montmorillonite
Organic compounds
Phenols
Phenols - chemistry
Pollution
Solvents
Sorption
Trichloroethylene
Trichloroethylene - chemistry
Water - chemistry
Water Pollutants, Chemical - chemistry
Water Purification - methods
Water treatment and pollution
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Summary:The single-solute and bisolute sorption behaviour of phenol and trichloroethylene, two organic compounds with different structures, onto cetyltrimethylammonium bromide (CTAB)-montmorillonite was studied. The monolayer Langmuir model (MLM) and empirical Freundlich model (EFM) were applied to the single-solute sorption of phenol or trichloroethylene from water onto monolayer or multilayer CTAB-montmorillonite. The parameters contained in the MLM and EFM were determined for each solute by fitting to the single-solute isotherm data, and subsequently utilized in binary sorption. The extended Langmuir model (ELM) coupled with the single-solute MLM and the ideal adsorbed solution theory (IAST) coupled with the single-solute EFM were used to predict the binary sorption of phenol and trichloroethylene onto CTAB-montmorillonite. It was found that the EFM was better than the MLM at describing single-solute sorption from water onto CTAB-montmorillonite, and the IAST was better than the ELM at describing the binary sorption from water onto CTAB-montmorillonite.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2012.488