Consider the separation of
-dioxane and water using benzene as a liquid-liquid extraction solvent. The distribution coefficient is constant equal to 1.2 and the following relationship holds:
, where
is the ratio of the masses of
-dioxane and benzene and
is the ratio of the masses of
-dioxane and water. 10000 kg/hr of a 25-weight-percent solution of dioxane in water is contacted with 15000 kg/hr of solvent in
cross-flow stages with solvent split. The Demonstration plots the equilibrium straight line in red and step-off stages using the user-specified value of
. Finally, the percent recovery of
-dioxane is displayed in green. It is clear that the percent recovery increases if one increases the number of cross-flow stages,
.
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