Question

What is capillary pressure curve?

(a) A plot of saturation of the cake versus pressure difference

(b) A plot of saturation of the cake versus temperature difference

(c) A plot of concentration of the filtrate versus temperature difference

(d) A plot of concentration of the filtrate versus pressure difference

This question was posed to me during an interview.

The above asked question is from Filtration at Constant Pressure Drop in section Filtration of Food Processing Unit Operations

Answer 1

The correct answer is (a) A plot of saturation of the cake versus pressure difference

Explanation: A plot of saturation of the cake versus pressure difference in an equilibrium state is called capillary pressure curve. It is used in reservoir engineering primarily for calculating initial fluid contacts and transition zones.