Abstract
An extended Radke–Prausnitz equation is useful in predicting the adsorption equilibria of organic multi-solute aqueous solutions on activated carbon. It has an advantage that, if the single-solute and two-solute parameters are available, the calculation of adsorption equilibria for more than three-solute systems can be carried out without additional parameters. The authors have previously proposed an empirical method for estimating the single-solute parameters using the physical properties of solutes and have obtained good prediction results for thirteen single-solute systems. In this study, the two-solute parameters of the extended Radke–Prausnitz equation are correlated with the normal boiling point and molecular weight of solutes and the prediction performances are examined for adsorption equilibria of six two-solute aqueous solution systems. The prediction results are in good agreement with the experimental data.
