Question

What is the pore size in nano filtration?

(a) 1-10 nanometers

(b) 10-50 nanometers

(c) 50-100 nanometers

(d) 100-150 nanometers

The question was asked in an internship interview.

Enquiry is from Filtering Medium Resistance in section Filtration of Food Processing Unit Operations

Answer 1

The correct answer is (a) 1-10 nanometers

The explanation: Nano-filtration is a membrane filtration based method that uses nanometer sized through pores that pass through the membrane. These membranes have pore sizes from 1-10 nanometers.