Question

Example 1
160 cm/s of a solvent S is used to treat 400cm/s of a 10 per cent by mass solution of A in B, in a
three-stage countercurrent multiple-contact liquid-liquid extraction plant. What is the composition
of the final raffinate?
Using the same total amount of solvent, evenly distributed between the three stages, what would
be the composition of the final raffinate if the equipment were used in a simple multiple-contact
arrangement?
Equilibrium data:
kg A/kg B:
kg A/kg S:
Densities (kg/m):
0.05
0.069
PA = 1200,
0.10
0.159
PB = 1000,
0.15
0.258
es = 800

Answer 1

Answer:

160 cm3/s of a solvent S is used to treat 400cm3/s of a 10 per cent by mass solution of A in B, in a three-stage countercurrent multiple- contact ...

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