Final answer:
Concentration polarisation refers to the build-up of solute particles near the surface of a membrane. The gel polarisation model equation is Cp = CG × (1 - exp(-kf × t)).
Step-by-step explanation:
Concentration polarisation refers to the build-up of solute particles near the surface of a membrane during filtration or diffusion, resulting in a decrease in the concentration of the solute on the permeate side of the membrane. This occurs because the solute particles cannot easily move through the membrane, causing them to accumulate and create a concentration gradient.
The gel polarisation model equation can be used to explain concentration polarisation in gel electrophoresis. The equation is:
Cp = CG × (1 - exp(-kf × t))