Question

The following data were measured in a 40 liter bioreactor by a dissolved oxygen electrode during a cycle in which the air supplied was shut-off and then restarted. (The system automatically restarted the air supply when the DO reached a minimal acceptable value.) The cell concentration at the time the data were collected was 0.96 g/L Time (s Conc. O, (mg/L 6.33 6.33 6.33 5.78 5.22 4.66 4.10 3.55 2.99 2.43 2.54 3.12 3.59 3.95 4.24 4.45 4.59 4.74 4.87 4 12 15 18 21 24 27 30 36 Plot the data (time versus concentration of O2). Calculate the oxygen uptake rate (OUR) in units of mg/L s. Calculate the specific oxygen consumption rate (q o2) in units of g O2/g cells h. Determine the mass transfer coefficient (kia) in units of h" Estimate the heat generated by this culture (kcal/h) 1V.

Answer 1

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