A fed-batch reactor containing 2 litre of medium and 0.1 g.l-l of biomass is fed with a medium containing 1 g.l-1 of substrate at 1 litre per hour. If after 10 hours, the concentration of biomass in the reactor was 0.2 g.l-1, then the biomass produced during the 10 hour period is
Options
A. 1.5 g
B. 2.2 g
C. 3.0 g
D. 6.0 g
Correct Answer
2.2 g
Fermentation Reactors problems
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1. In a fluidized bed reactor mixing is achieved by
6. A strain of Escherichia coli has a maximum specific growth rate of 0.8 h-1 on a glucose based medium. If this organism is being grown in a chemostat with a dilution rate of 1.2 h-1, then at steady state the concentration of E. coli in the same medium will
9. Which of the following would be correct concerning the concentration of biomass (X). growth limiting substrate (S) and product (P) in a chemostat when the cells have been washed out?
Options
A. X,S and P will be zero
B. X,S and P can not be predicted for the above condition
C. X and P will be zero while S is equal to the substrate concentration in feed