Recovery of Proteins and Microorganisms from Cultivation Media by Foam Flotation
213
Fig. 5. Three-stage thermostatted flotation column (25 mm diameter). P feed; R liquid outlet
with protein residue; S foam liquid outlet; N 2 gas inlet; 1 glass frit; 2 thermostat; 3 perforated
plates with overflow and down-comer; 4 liquid level in the three stages; 5 electrical conductivity probe; and 6 foam breaker (3000 rpm) [70]
213
Fig. 5. Three-stage thermostatted flotation column (25 mm diameter). P feed; R liquid outlet
with protein residue; S foam liquid outlet; N 2 gas inlet; 1 glass frit; 2 thermostat; 3 perforated
plates with overflow and down-comer; 4 liquid level in the three stages; 5 electrical conductivity probe; and 6 foam breaker (3000 rpm) [70]