A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g-DCW) 1 hr 1 is being grown aerobically in a fed-batch bioreactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18s 1 for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8mg/ml). The maximum density to which the cells can be grown in the fed-batch process without the growth being limited by oxygen transfer, is approximately.

A bacterial culture having a specific oxygen uptake rate of 5 mmol O2

1.	A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g-DCW) 1 hr 1 is being grown aerobically in a fed-batch bioreactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18s 1 for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8mg/ml). The maximum density to which the cells can be grown in the fed-batch process without the growth being limited by oxygen transfer, is approximately.
A.	14 g/l
B.	26 g/l
C.	32 g/l
D.	65 g/l
Answer» E.

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