A bioreactor with a special shape (but it doesnt matter because a bioreactor is a bioreactor) is used for a fermentation process using yeast cells.

Here is what you know:

A 13% glucose in water solution enters the bioreactor at a rate of 45 kg/hr.

An organic solvent, 2-ethyl-1,3-hexanediol (AKA hex) enters the bioreactor at a rate of 45 kg/hr.

Yeast cells convert glucose to ethanol according to the following equation:

C₆H₁₂O₆ ->2 C₂H₆O + 2 CO₂

Ethanol is soluble in hex; they are both carried out of the system as the product stream.

CO₂ gas exits the bioreactor through an escape valve.

Although some ethanol leaves as part of the product stream, there is also some unconverted glucose that leaves the system in an aqueous residue stream. Of the aqueous residue stream, the concentration of unconverted glucose is 0.3% and the concentration of ethanol is 0.7%. (Hint, hint this means the rest of the aqueous residue stream is water).

Molecular weights:

Glucose= 180.2

Ethanol= 46.1

CO₂= 44.0

Assume all CO₂ produced leaves in the off gas.

a. What is the concentration of ethanol in the hex stream leaving the reactor?

b. What is the mass flow rate of CO₂?

Create a material balance data table in addition to a flow diagram.