Measuring of oxygen mass-transfer through the gas-liquid interface
DOI:
https://doi.org/10.15626/Eco-Tech.2003.045Keywords:
Liquid-gas interface; oxygen mass-transfer; overall transfer velocity.Abstract
In the present study, oxygen mass-transfer processes through the liquid-air interface from
gas mixture with variable volume at constant pressure were investigated. This paper
describes a device based on the electrochemical oxygen sensor placed on the liquid-air
surface. The oxygen sensor measured the decrease of oxygen concentration in the small
volume under the device, that is in contact with deoxygenated liquid. Experimental data
obtained by the device were introduced to a novel mathematical model, which allowed
calculating diffusion flow through the liquid-air interface and diffusional conductivity P/1
of liquid surface.
By means of the developed device it is possible to measure the total impediment of the
air-water interface to oxygen mass-transfer.
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