The Sorption of Acids by Wool from Mixtures of Acids

Abstract

The amounts of Orange II dye (C.I. 15510) sorbed from solutions containing mixtures of the lye acid or the sodium salt of the dye with hydrochloric acid or with trichloroacetic acid were measured. The results show that, although the sorption of hydrochloric acid or trichloroacetic acid from the mixtures is normal, the sorption of the dye acid is anomalous and quite different from that of the acids studied earlier. Competition between thedye anion and the counteranions is overshadowed by a secondary effect which results in anincrease in the amount of dye sorbed as the concentration of the counterion is increased.A possible explanation for this effect is suggested.