In a recombinant protein expression process, the host microorganism, Pichia pastoris, must be separated from the culture supernatant after production. A pilot scale bioreactor with a working volume of 250 liters is used for this process and the final biomass concentration is 330 g/L. Considering the separation, it should be completed in 1 hour.
What kind of chromatography would you use to purify this protein?