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Optimal Surfactant Screening by Model Application for Soil Washing Process  

우승한 (포항공과대학교 화학공학과/환경공학부)
박종문 (포항공과대학교 화학공학과/환경공학부)
Publication Information
Journal of Soil and Groundwater Environment / v.8, no.3, 2003 , pp. 61-73 More about this Journal
Abstract
A model describing the distribution of contaminants in soil/water systems for the application of soil-washing technology using surfactant was developed. The model simulation was conducted for screening the best surfactant, evaluating the effect of water dose, and optimizing soil-washing methodology. Naphthalene, phenanthrene, and pyrene as target compounds and Triton X-l00, Tergitol NP-10, Igepal CA-720, and Brij 30 as surfactants were used in the model simulations. The washing efficiency was not greatly enhanced by increasing water dose with the same total surfactant dose. The approach of successive washings was more efficient than a single washing with the same amount of water and surfactant. Equal allotment of the amount of water and surfactant was the best condition for the successive washings. The model can be applied for the optimal design of the soil washing process without extra experimental efforts.
Keywords
modeling; PAH; soil; surfactant; washing;
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