Abstract
The adsorption characteristics of volatile chlorinated organic compounds in soil must be clarified to understand the extent of contamination and to determine effective cleanup conditions for soil vapor extraction. In this study, an adsorption equilibrium model for soil with any water content and an estimation method for adsorbed amounts were developed. This model was developed with consideration of the different adsorption rates of dry and wet pores, the adsorption to organic soil matter and the dissolution in water. The adsorption equilibrium relation of every kind of soil and every substance can be expressed well using the dry pore adsorption ratio γ. γ can also be expressed related to the water content. The predicted amounts agreed well with the measured data.
