In batch culture, protogon is produced from peptone during the stationary phase with a yield of 0.4 protogon mg per g of peptone. If it is to be produced in a chemostat at a dilution rate of 0.5 h-1 from a medium containing 10 g.l-1 of peptone, then the rate of protogon synthesis would be
Options
A. 0 g.l-1h-1
B. 0.5 g.l-1h-1
C. 1 g.l-1h-1
D. 2 g.l-1h-1
Correct Answer
0 g.l-1h-1
Fermentation Reactors problems
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1. Unsteady state mass balance for dynamic model of continuous stirred tank reactor (CSTR) is
Options
A. time rate of total amount in rector = rate of addition to reactor -rate of removal + rate of formation
B. total amount in rector = rate of addition to reactor - rate of removal + rate of formation
C. rate of total amount in rector = rate of addition to reactor - rate of removal + rate of formation
Correct Answer: time rate of total amount in rector = rate of addition to reactor -rate of removal + rate of formation
2. The cellular productivity in a continuous stirred tank fermenter (CSTF) increases with an increase in the dilution rate and reaches a maximum value. If the dilution rate is increased beyond the maximum point, the productivity will