The continuous cultures are not widely used in industry because

TLS Online TPP Program

#Question id: 27909

#Section 5: Bioprocess Engineering and Process Biotechnology

A 20-1 stirred fermenter containing a Bacillus thuringiensis culture at 30°C is used for production of microbial insecticide, ka is determined using the dynamic method. Air flow is shut off for a few minutes and the dissolved-oxygen level drops; the air supply is then re-connected. When steady state is established, the dissolved-oxygen tension is 78% air saturation. The following results are obtained. Estimate ka.

TLS Online TPP Program

#Question id: 27910

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate of oxygen tranfer is given by equation 

TLS Online TPP Program

#Question id: 27911

#Section 5: Bioprocess Engineering and Process Biotechnology

The smaller the size of the bubble the is the value of K_La

TLS Online TPP Program

#Question id: 27912

#Section 5: Bioprocess Engineering and Process Biotechnology

"Power required for turbulent flow is independent of the viscosity of the fluid but proportional to fluid density", this statement is applicable to which type of regime?

TLS Online TPP Program

#Question id: 27913

#Section 5: Bioprocess Engineering and Process Biotechnology

Power consumed by the agitator of the reactor can be expressed as

TLS Online TPP Program

#Question id: 27914

#Section 5: Bioprocess Engineering and Process Biotechnology

For scaling up of a bioreactor for the aerobic fermentation process, the following parameter may be assumed to be constant