Unit-IV

Introduction of Mass Transfer Operations

Diffusion –diffusivity -  Mass transfer operation - mass transfer coefficient.

Absorption –distillation - vapour-liquid Equilibrium – Relative volatility- Need for multiple stages of contacting, distillation with reflux.

Equipment for Gas - Liquid contacting.

Humidity – role of cooling towers in chemical industries and power plants.

Liquid - Liquid Extraction -Distribution coefficient -Selection of solvent.