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The distillation technique most suited for separating glycerol from spent - lye in the soap industry is:

Options

  1. ASteam distillation
  2. BDistillation under reduced pressure
  3. CSimple distillation
  4. DFractional distillation

Correct answer

B. Distillation under reduced pressure

Step-by-step solution

Glycerol (B.P. 290 o C ) is separated from spent - lye in the soap industry by distillation under reduced pressure, as for simple distillation very high temperature is required which might decompose the component.

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