Dual-mode sorption model for single- and multisolute sorption onto organoclays

Journal Article · Mon Feb 01 04:00:00 EST 1999 · Separation Science and Technology

DOI:https://doi.org/10.1081/SS-100100667· OSTI ID:347913

Huh, J K; Song, D I; Jeon, Y W ^[1]

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1. Kyungpook National Univ., Taegu (Korea, Republic of)

The dual-mode sorption model (DSM) was applied to the single-solute sorption of 2-chlorophenol, 3-cyanophenol, and 4-nitrophenol from water onto organoclays. The three parameters contained in the DSM were determined for each solute by fitting to the single-solute isotherm data and subsequently utilized in competitive multisolute sorptions. A systematic method to determine the parameters for each solute was also suggested. The ideal adsorbed solution theory (IAST) coupled with the single-solute DSM and the competitive dual-mode sorption model (CDSM) extended to describe multisolute sorption were used to predict multisolute sorption onto organoclays and compared with the data to determine the predictive capabilities. The DSM was found to describe well single-solute sorption from water onto organoclays. The predictions from the CDSM and the IAST based on the DSM, though rather poor for some solutes, were generally in agreement with the multisolute sorption data. However,the authors could not tell at this stage which of the two competitive models is better.

• OSTI ID: 347913
• Journal Information: Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 4 Vol. 34; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ADSORPTION
CHLORINATED AROMATIC HYDROCARBONS
CLAYS
ENVIRONMENTAL TRANSPORT
MATHEMATICAL MODELS
NITROPHENOL
PHENOLS
SOILS
SORPTIVE PROPERTIES
THEORETICAL DATA