hapensiirto
Hapensiirto, often called oxygen transfer in English, is the process by which molecular oxygen moves from the gas phase into the liquid phase and becomes dissolved oxygen. It is a fundamental concept in aerobic bioprocessing, including fermentation, cell culture, wastewater treatment, and aquaculture, where adequate dissolved oxygen (DO) is essential for the metabolism of air-loving organisms.
The rate at which oxygen becomes available in the liquid is described by the oxygen transfer rate
Measurement and control methods include the gassing-out (dynamic) method and the sulfite method to determine kLa,
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