Examveda
Examveda

Wash out (as defined by D = μmax) of a continuous stirred tank fermenter is characterized by (X = biomass, S = substrate concentration in bioreactor, S0 = substrate concentration in feed, P = product concentration in bioreactor).

A. X = 0, S = 0, P = 0

B. X = 0, S = S0, P = 0

C. X = 0, S < 0, P = 0

D. X < 0, S < 0, P < 0

Answer: Option B


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Related Questions on Bioprocess Engineering and Process Biotechnology

During cultivation of microorganisms in a fermenter, various parameters are controlled by appropriate sensor (probe). Match each probe in Group I with the appropriate response mechanism in Group II.

Group I (Probe) Group II (Response)
P. Thermistor 1. Activation of acid/alkali pump
Q. Oxygen electrode 2. Activation of vegetable oil pump
R. Metal rod 3. Activation of hot/cold water pump
S. pH electrode 4. Increase/decrease in stirrer motor speed

A. P-2, Q-3, R-1, S-4

B. P-1, Q-2, R-4, S-3

C. P-3, Q-2, R-4, S-1

D. P-3, Q-4, R-2, S-1