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Problem 4 ( 2 0 pts ) A 1 0 - liter stirred tank is used to cultivate mouse myeloma cells. Dry air is sparged

Problem 4(20 pts)
A 10-liter stirred tank is used to cultivate mouse myeloma cells. Dry air is sparged from the bottom at 1
Lmin to supply O2 to the system. The gas composition of the outlet is 16% of O2,3.5%CO2,6.5% wa-
ter vapor and the balance N2. The ambient pressure and temperature are 1atm and 37C. The dissolved
O2 in the reactor is controlled at 20% of saturation with ambient air.
(a) Assuming steady state, what is the volumetric O2 transfer coefficient KLa?
(b) The specific OUR of myeloma cells is 510-11mmolcell-h. What is the cell concentration?
(c) What is the respiratory quotient (RQ)? Assume that the mole fraction of CO2 in the ambient air is
negligible. The universal gas constant R=0.082L**atmmol-K.
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