A new approach to determination of the parameters describing liquid adsorption on the solid surfaces

Abstract

A new approach for determining the surface phase capacity on homogeneous and heterogeneous solid surfaces has been proposed. This approach is based on the statistical analysis of the errors made applying the Everett and Langmuir–Freundlich equations. The Everett equation was used for evaluation of the surface phase capacity formed on homogeneous solid surfaces, however, the Langmuir–Freundlich one was used in the case of adsorption on heterogeneous surfaces. Calculations were made assuming the linear regression model and within it making a statistical analysis of the errors resulting from using these equations. In terms of the proposed approach we can obtain more reliable thermodynamic values characterizing the adsorbed phase and, therefore, predict more accurately the adsorption mechanism in the systems under consideration.