Untersuchungen zur Einzel- und Gemischadsorption von Phenolen an Aktivkohlen. Teil 3: Zur pH-Abhängigkeit der Adsorptionsgleichgewichte

In order to describe the adsorption of dissociating substances, initially the adsorption isotherms for the borderline cases of undissociated and dissociated substances are experimentally determined. With the aid of the Ideal Adsorbed Solution Theory (IAS Theory) then the calculation is successfully performed for pH-values at which both forms are present side by side. As examples, the systems phenol/activated carbon and p-chlorophenol/activated carbon are examined, and they show a good agreement between calculation and measurement.