Equilibrium and kinetic studies have been made on the adsorption of acrylonitrile(CH2= CHCN) on three soils and four minerals from aqueous solutions. It was shown that the organic matter was the major factor affecting the adsorption process in the soils. The conformity of the equilibrium data to linear type(one soil) and Langmuir type(two soils) isotherms indicated that different mechanisms were involved in the adsorption. This behavior appears to be related to the hydrophobicity of soil organic matter due to their composition and E4/ E6 ratio of humic acids. The adsorption kinetics were also different among the soils, indicating the difference in porosity of organic matter among the soils, and the kinetics strongly affected the adsorption capacity of soils for acrylonitrile.Acrylonitrile was slightly adsorbed from aqueous solutions on pyrophyllite with electrically neutral and hydrophobic nature, and practically not on montmorillonite and kaolinite saturated with Ca. However, much higher adsorption occ Equilibrium and kinetic studies have been made on the adsorption of acrylonitrile (CH2 = CHCN) on three soils and four minerals from aqueous solutions. It was shown the the organic matter was the major factor affecting the adsorption process in the soils. equilibrium data to linear type (one soil) and Langmuir type (two soils) isotherms indicating that the different mechanisms were involved in the adsorption. This behavior appears to be related to the hydrophobicity of soil organic matter due to their composition and E4 / E6 ratio of The adsorption kinetics were also different among the soils, indicating the difference in porosity of organic matter among the soils, and the kinetics strongly affected the adsorption capacity of soils for acrylonitrile. Acrylonitrile was slightly adsorbed from aqueous solutions on pyrophyllite with electrically neutral and hydrophobic nature, and practically not on montmorillonite and kaolinite saturated with Ca. However, much hig her adsorption occ