Solid-Liquid Extraction (( Leaching
water in a counter-current. The residue from each stage containing 0.25 kg water per kg insoluble solid. Find the number of stages such that the sand from the final stage contains 10% salt when dried. Solution: B = (0.625) (1.6) = 1 kg/s S 0 = 1.6 – 1 = 0.6 kg/s V N+1 = 0.5 kg/s L N+1 = 0 (Pure solvent)
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