The Sorption of Acids by Wool from Mixtures of Acids I—The Sorption of Hydrochloric Acid and Dichloroacetic Acid or Monochloroacetic Acid*

Abstract

The amounts of dichloroacetic acid and hydrochloric acid sorbed by wool from mixtures containing various amounts of the two acids in aqueous solution were measured. Some tests were also carried out in which monochloroacetic acid was used instead of dichloroacetic. The results show that the dichloroacetate ion competes with the chloride ion for the sorption sites on the wool fibre, but its higher affinity causes a higher acid uptake than when hydrochloric acid alone is used at the same pH. The amount of acid sorbed can be calculated from the final concentrations of the two acids in the solution in equilibrium with the wool.