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sci.bioreactor-aeration-OTR Calculator
Calculates oxygen transfer rate (OTR) in a bioreactor from kLa, dissolved oxygen saturation, and current DO level: OTR = kLa(C* − C). kLa is the critical scale-up parameter for aerobic fermentation — insufficient OTR causes oxygen limitation, reducing cell growth and product yield.
Inputs
Kla Per Hr
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Do Sat Mg L
Reference formula or conversion factor shown for context.
Do Actual Mg L
Reference formula or conversion factor shown for context.
Reactor Volume L
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Results
OTR (g O₂/hr)
Reference formula or conversion factor shown for context.
OTR (mmol O₂/L/hr)
Reference formula or conversion factor shown for context.
driving force (DO* - DO)
Sample size or count used in the calculation.
kLa (1/hr)
Reference formula or conversion factor shown for context.
OTR = kLa × (DOsat - DO) × V
The value at the specified point or condition.
critical DO for aerobic cells
Reference formula or conversion factor shown for context.