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Model Development of Surfactant Reuse by Activated Carbons in Soil Washing Process  

Ahn, Chi-Kyu (School of Environmental Science and Engineering, POSTECH)
Kim, Young-Mi (Department of Chemical Engineering, Hanbat National University)
Woo, Seung-Han (Department of Chemical Engineering, Hanbat National University)
Park, Jong-Moon (School of Environmental Science and Engineering/Department of Chemical Engineering, POSTECH)
Publication Information
Journal of Soil and Groundwater Environment / v.11, no.2, 2006 , pp. 1-12 More about this Journal
Abstract
A model describing the distributions of surfactants and HOCs (hydrophobic organic chemicals) in surfactant/HOC/activated carbon systems for surfactant reuse in soil washing process was developed. The model simulation was conducted for the evaluation of the effect of concentrations of surfactant, HOC, or activated carbons. Phenanthrene as a target HOC, Triton X-100 as surfactant and three granular activated carbons with different particle sizes (4-12, 12-20, and 20-40 mesh) were used in the model simulation. The distributions of HOC were significantly affected by surfactant dosages, especially at around the CMC(s). The results of selectivities for phenanthrene were much larger than 1 at various concentrations of surfactants, phenanthrene and activated carbons, which mean that the selective adsorption of phenanthrene by activated carbons is a proper separation method from surfactant solution. The model can be applied for the design of the surfactant reuse process using activated carbons without extra experimental efforts.
Keywords
Activated carbon; Modeling; Soil washing; Surfactant reuse;
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Times Cited By KSCI : 1  (Citation Analysis)
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