In an activated sludge process, the biomass is recycled to

TLS Online TPP Program

#Question id: 27605

#Section 5: Bioprocess Engineering and Process Biotechnology

If feed of 100 tonnes per hour at 5% concentration is fed to a crystallizer, the product obtained at 25% concentration is equal to ______tonnes per hour.

TLS Online TPP Program

#Question id: 27606

#Section 5: Bioprocess Engineering and Process Biotechnology

In a process, CO2 and water is given as feed and the mass fraction is 0.25 and 0.75 respectively. The feed stream is 5 Kg/s and the product stream is 10 Kg/sec.

A. What is the feed stream of CO2 in Kg/s?

TLS Online TPP Program

#Question id: 27908

#Section 5: Bioprocess Engineering and Process Biotechnology

The dynamic technique is based on the

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