TLS Online TPP Program
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TLS Online TPP Program
#Question id: 21947
#Unit 12. Biochemical Engineering
Match the KLa determination method in Group I with the characteristics of the method in 1 Group II
|
P. |
oxygen
balance method |
1. |
aeration of
an actively respiring culture is stopped and switched on again |
|
Q |
static
gassing out technique |
2. |
yields
greater OTR and KLa than other methods |
|
R. |
dynamic
gassing method |
3. |
It can be
done precisely only at steady state |
|
S. |
sodium
sulphite oxidation method |
4. |
Non respiring
biological system is required |
TLS Online TPP Program
#Question id: 21948
#Unit 12. Biochemical Engineering
Under unaerated condition in a fermentor, the power consumed by a single impeller was 10,000 W. The diameter of the impeller D is 1m and the density of the medium is 1000 kg/m3 and the stirrer speed is 1s-1. If one more impeller is added to the fermentor, power consumption would be approximately
TLS Online TPP Program
#Question id: 21971
#Unit 12. Biochemical Engineering
In an anaerobic fermentor, broth is agitated intensely at 100rpm in a 3.0 m3 baffled tank using a Rushton turbine with diameter of 0.5m. If the diameter of the
impeller is decreased to 0.25m the mixing time in (seconds) would approximately increase ………fold
TLS Online TPP Program
#Question id: 21978
#Unit 12. Biochemical Engineering
The ethanol yield per unit mass of substrate consumed (YP/S ) in an anaerobic fermentation process can be improved by
TLS Online TPP Program
#Question id: 21320
#Unit 12. Biochemical Engineering
In a lab scale reactor, the size of the air bubbles in the reactor is primarily determined by
TLS Online TPP Program
#Question id: 21486
#Unit 12. Biochemical Engineering
The equation τ = μ du/dy is also termed as