TLS Online TPP Program
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TLS Online TPP Program
#Question id: 22792
#Unit 12. Biochemical Engineering
In breakthrough curve for batch adsorption, steeper the curve_________ is the adsorbent
TLS Online TPP Program
#Question id: 22797
#Unit 12. Biochemical Engineering
The addition of silicone antifoam to a production fermenter has the disadvantage of
TLS Online TPP Program
#Question id: 21945
#Unit 12. Biochemical Engineering
Increasing aeration at a particular rpm does not always lead to increase in oxygen mass transfer in a bioreactor. This is because
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