TLS Online TPP Program
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TLS Online TPP Program
#Question id: 21065
#Unit 12. Biochemical Engineering
In a batch sterilization process if ∇overall , ∇heating & ∇cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121ºC of the process is (given that the specific
death rate (k) of microorganisms at 121ºC is 2.54 min-1 ):
TLS Online TPP Program
#Question id: 20830
#Unit 12. Biochemical Engineering
Consider the scale up of a fermentation from a 10 L to 10,000 L while maintaining geometric similarity. Agitation speed was maintained at 500 rpm in the 10 L fermenter. If scale up is done based on constant tip speed, then the agitation speed in the larger reactor should be ………….rpm
TLS Online TPP Program
#Question id: 20834
#Unit 12. Biochemical Engineering
In a typical fermentation process the volumetric oxygen transfer coefficient (KLa) of the system was found to increase after the addition of antifoam agent. The most probable reason for this is:
TLS Online TPP Program
#Question id: 20840
#Unit 12. Biochemical Engineering
The driving force for mass transfer by molecular diffusion is the difference in
TLS Online TPP Program
#Question id: 20559
#Unit 12. Biochemical Engineering
In a bioprocess, assume that only cell mass is formed. Due to a variation in process conditions, if the microbial cell yield has halved, what would be the rate of substrate
consumption to maintain the same rate of cell mass production?
TLS Online TPP Program
#Question id: 20561
#Unit 12. Biochemical Engineering
The ratio of gassed to ungassed powder (Pg/P) in a bioreactor will be in the range of: