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TLS Online TPP Program

#Question id: 15498

The maximum yield for microbial conversion of Glucose (C6H12O6) to ethanol (C2H5OH) on a mol/mol basis is approximately:

#Section 4: Fundamentals of Biological Engineering
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TLS Online TPP Program

#Question id: 14287

#Section 5: Bioprocess Engineering and Process Biotechnology

A chemostat is run with a feed rate of llitre/h when the volume of the reactor is also 1 litre. At steady state the doubling time of the cells in the chemostat is.....   h. 
TLS Online TPP Program

#Question id: 14288

#Section 5: Bioprocess Engineering and Process Biotechnology

During a batch culture experiment the following data was obtained 

What will be the product yield (g) per gram of substrates?
TLS Online TPP Program

#Question id: 14289

#Section 5: Bioprocess Engineering and Process Biotechnology

In a fermenter the impeller diameter is increased from 0.5m to 1m and the rpm is increased from 100 rpm to 400 rpm. Reynolds number will increase by?
TLS Online TPP Program

#Question id: 14290

#Section 5: Bioprocess Engineering and Process Biotechnology

Acetobacter aceti converts alcohol to acetic acid according to the schiometric relation

In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism produces 16g/l acetic acid and 2g/l was the residual ethanol concentration what are the theoretical and observed yields of acetic acid expressed in g/g ethanol
TLS Online TPP Program

#Question id: 14291

#Section 5: Bioprocess Engineering and Process Biotechnology

In a batch sterilization process if  overall,  heating &  cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121^o-C of the process is (given that the specific death rate (k) of microorganisms at 121^o-C is 2.54 min-1 ):
TLS Online TPP Program

#Question id: 14292

#Section 5: Bioprocess Engineering and Process Biotechnology

Consider the scale up of a fermentation from a 10L to 10000L while maintaining geometric similarity. Agitation speed was maintained at 500 rpm in the 10L fermenter. If scale up is done based on constant tip speed, then the agitation speed in the larger reactor should be 
rpm.