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sci.oxygen-transfer-rate-kLa Calculator
Calculates the volumetric oxygen transfer coefficient kLa from dissolved oxygen measurements during gassing-on or gassing-off experiments. kLa = 100–500 h⁻¹ for well-aerated bioreactors — kLa directly limits maximum oxygen delivery rate to microorganisms at given dissolved oxygen setpoint.
Inputs
Kla Per Hr
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
C Star Mg L
Reference formula or conversion factor shown for context.
C Bulk Mg L
Amount of solute per unit volume. Higher concentration = more solute dissolved.
V L
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Results
oxygen transfer rate OTR (g O₂/L/hr)
The value at the specified point or condition.
total OTR in reactor (g O₂/hr)
The combined total across all inputs and components.
driving force (C* − C) (mg/L)
Sample size or count used in the calculation.
OTR = kLa · (C* − C)
Reference formula or conversion factor shown for context.
kLa guide
Reference formula or conversion factor shown for context.