Phase equilibria for the sucrose-potassium chloride-water system on Dowex 50 W X 4 resin (K⁺) at 90⁰C Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/4q77fw279

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  • Equilibrium data for the sucrose-potassium chloride-water system were taken for Dowex 50 W X 4 resin at 90° C. The sugar concentration was varied from 0% to 60% by weight, and the salt content, from 0% to 6% by weight. Because shrinkage of the resin due to salt absorption was noted, the bulk volume of the resin was determined for the same ranges of sugar and salt concentrations. It was found that as the sugar concentration increased, the absorption of sugar increased, and the absorption of sugar decreased with increasing salt concentrations. The distribution coefficient, the ratio of the concentration of the solute in the liquid in the resin phase to the concentration of the solute in the liquid outside of the resin was found to increase with increasing sucrose concentrations as would be expected for a nonionic substance. The decreased absorption of sucrose with increasing salt concentration is caused by shrinkage of the resin, and a consequent decrease in capacity.
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