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

Options

  1. ADistillation under reduced pressure
  2. BSimple distillation
  3. CFractional distillation
  4. DSteam distillation

Correct answer

A. Distillation under reduced pressure

Step-by-step solution

Glycerol (B.P. 290°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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