Liquid from a brewery fermenter can be considered to contain 10% ethanol and 90% water. 50000 kg h-1 of this fermentation product are pumped to a distillation column on the factory site. Under current operating conditions a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate one-tenth that of the feed.

 What is the composition of the waste 'bottoms' from the still?

TLS Online TPP Program

#Question id: 19533

#Section 4: Fundamentals of Biological Engineering

Which of the following does the concept of material balance based upon?

TLS Online TPP Program

#Question id: 19534

#Section 4: Fundamentals of Biological Engineering

The equation of material balance, (Final condition + Sum of outputs) is equal to which of the following?

TLS Online TPP Program

#Question id: 19535

#Section 4: Fundamentals of Biological Engineering

A container has 10 grams of water 5 grams of water is added and 2 grams of water is taken out, what is the final amount of water?

TLS Online TPP Program

#Question id: 19536

#Section 4: Fundamentals of Biological Engineering

Which of the following type of yield is referred to as “Maximum possible yields”?

TLS Online TPP Program

#Question id: 19537

#Section 4: Fundamentals of Biological Engineering

The equation for aerobic production of acetic acid from ethanol is ____________

C2H5OH(ethanol) + O2(acetic acid) → CH3CO2H + H2O

Acetobacter aceti bacteria are added to vigorously-aerated medium containing 10 g l^-1 ethanol. After some time, the ethanol concentration is 2 g l^-1 and 7.5 g l^-1 acetic acid is produced. Calculate the Observed yield.

TLS Online TPP Program

#Question id: 19538

#Section 4: Fundamentals of Biological Engineering

The equation for aerobic production of acetic acid from ethanol is ____________

C2H5OH(ethanol) + O2(acetic acid) → CH3CO2H + H2O

Acetobacter aceti bacteria are added to vigorously-aerated medium containing 10 g l-1 ethanol. After some time, the ethanol concentration is 2 g l-1 and 7.5 g l-1  acetic acid is produced. Calculate the theoretical yield.