Oxygen transfer was measured in a stirred tank bioreactor using dynamic method. The dissolved oxygen tension was found to be 80% air saturation under steady state conditions. The measured oxygen tensions at 7s and 17s were 55% and 68% air saturation, respectively. The volumetric mass transfer coefficient KLa is _____s 1

Oxygen transfer was measured in a stirred tank bioreactor using dynami

1.	Oxygen transfer was measured in a stirred tank bioreactor using dynamic method. The dissolved oxygen tension was found to be 80% air saturation under steady state conditions. The measured oxygen tensions at 7s and 17s were 55% and 68% air saturation, respectively. The volumetric mass transfer coefficient KLa is _____s 1
A.	7.339
B.	0.07339
C.	0.339
D.	7339
Answer» C. 0.339

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