A continuous process is set up for treatment of wastewater. Each day, 10⁵ kg cellulose and 10³ kg bacteria enter in the feed stream, while 10⁴ kg cellulose and 1.5 x 10⁴ kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 7 x 10⁴ kg d^-1. The rate of bacterial growth is 2 x 10⁴ kg d^-1 ; the rate of cell death by lysis is 5 x 10² kg d^-1. Write balances for cellulose and bacteria in the system.

TLS Online TPP Program

#Question id: 21008

#Section 4: Fundamentals of Biological Engineering

Which of the following statement is correct for defined media?

TLS Online TPP Program

#Question id: 21009

#Section 4: Fundamentals of Biological Engineering

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

 C₂H₅OH + O₂   →       CH₃COOH + H₂O 

In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism  produces 16 g/l acetic acid and 2 g/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: 21010

#Section 4: Fundamentals of Biological Engineering

During a batch culture experiment, the following data was obtained 

What will be the product yield (g) per gram of substrate? 

TLS Online TPP Program

#Question id: 21011

#Section 4: Fundamentals of Biological Engineering

The degree of reduction of ethanol is-

TLS Online TPP Program

#Question id: 21012

#Section 4: Fundamentals of Biological Engineering

The degree of reduction of methane is-

TLS Online TPP Program

#Question id: 21013

#Section 4: Fundamentals of Biological Engineering

The degree of reduction of glucose is-