Question

What is permeate?

(a) Fluid that has retained in semi-permeable membrane

(b) Fluid that has passed through semi-permeable membrane

(c) Fluid that has to be passing through semi-permeable membrane

(d) The residue after filtration

I have been asked this question in a job interview.

The above asked question is from Membrane Separation topic in section Contact Equilibrium Separation Process of Food Processing Unit Operations

Answer 1

The correct choice is (b) Fluid that has passed through semi-permeable membrane

For explanation I would say: The membrane separation system splits stream into two fold effluent streams. They are permeate and concentrate. Permeate is defined as the fluid that passes through the semi-permeable membrane.