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Production of cell biomass in a bioreactor Cell biomass, represented as C 4 . 4 H 7 . 3 N 0 . 9 O 1

Production of cell biomass in a bioreactor
Cell biomass, represented as C4.4H7.3N0.9O1.2, is grown in a bioreactor. The reaction in the
bioreactor can be represented by the following equation:
C6H12O6+1.45O2+0.83NH30.92C4.4H7.3N0.9O1.2+3.88H2O+1.95CO2
The feed to the bioreactor is oxygen gas and an aqueous solution of ammonia and glucose. The
water (not including the ammonia and glucose dissolved in it) in the feed aqueous solution enters
the bioreactor at a flowrate of 2982mols2O/day (see Figure below). The Ammonia in the feed
is completely consumed in the bioreactor. The glucose is 15% in excess with respect to
ammonia. The oxygen gas is 25% in excess with respect to ammonia.
The feed to the bioreactor has 40 mols NH3? day and the bioreactor is operated at steady-state.
a. Draw and label a flowchart for the process. (The one given below is not completely
labeled). Note: Please redraw the flowchart by hand. Cutting-and-pasting the above
diagram will not be graded
b. From the General Balance Equation, derive the Balance Equation applicable to the
problem
c. Do a degree-of-freedom analysis using the Molecular Species Balance method to prove
that we can solve for the molar flow rates of all species leaving the bioreactor.
d. Solve for the molar flow rates of all species leaving the bioreactor.
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