Method for determining gas hold-up

Details Method for determining gas hold-up Method for determining gas hold-up

C - Chemistry, Metallurgy

12

M

C12M 1/34 (2006.01) G01N 27/02 (2006.01) G01N 27/04 (2006.01) G01N 27/22 (2006.01) G01N 33/483 (2006.01) G01N 33/487 (2006.01)

Patent

CA 2121145

2121145 9314402 PCTABS00024 A method and apparatus for determining gas hold-up in a fermentation culture, in which, prior to aeration and during fermentation, a high frequency alternating signal is input to electrodes in electrical contact with the culture, the magnitude of the reactive current signal leading the voltage in the electrode circuit is determined and the difference in said magnitudes prior to aeration and during fermentation is used as a measure of the gas hold-up. The system may be combined with various methods of measuring biomass to give a gas hold-up corrected value of biomass.

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