Adsorption of 5-Amino-2-Chlorotoluene-4-Sulfonic and Chlorhydric Acids from their solution by Weakly Basic Resin

This research deals with an investigation of the adsorption of two acids, namely, 5-amino-2-chlorotoluene-4-sulfonic and chlorhydric acids from their solution onto weakly basic resin. The screening of resins, kinetics, and isotherm were studied. Experiments for single and bisolute competitive adsorption were carried out to investigate the adsorption behavior of 5-amino-2-chlorotoluene-4-sulfonic acid and chlorhydric acid from their solution. The results indicate that the D301R is more appropriate for the removal of acids from solution. Adsorption affinity of 5-amino-2-chlorotoluene-4-sulfonic on D301R was found to be much higher than that of chlorhydric acid. The adsorption of acids obeys Langmuir isotherm model. The ideal adsorbed solution theory (IAST) coupled with the single-solute adsorption models were used to predict the bisolute competitive adsorption equilibria.