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15 maj 2013 · In this work we applied dynamic gassing-out method for measuring the volumetric mass transfer coefficient kLa in three type gas-liquid reactors (stirred tanks, bubble columns and airlift).
1 sty 2010 · A dynamic method of measuring the volumetric mass transfer coefficient of oxygen, kLa, in gas-liquid reactors is presented which consists in monitoring simultaneously the pressure and oxygen ...
31 lip 2019 · The document discusses measurement of the volumetric mass transfer coefficient (KLa), which indicates the rate of oxygen transfer in a bioreactor. It describes various methods to determine KLa values, including chemical and physical techniques like the sodium sulphite oxidation method.
15 mar 2020 · An alternative integral method, that is proposed for first time in this work, appears to offer accurate and reliable estimations of the volumetric mass transfer coefficient. The proposed method, despite its simplicity, has many advantages over the more elaborated methods.
The volumetric mass transfer coefficient (kLa) is a parameter that determines the rate at which a gaseous compound (e.g. O2 or CO2) can transfer between the gas phase and the liquid phase. The ‘kL’ represents the rate of molecular diffusion through the gas-liquid interface and the ‘a’ represents the area of this interface per liquid ...
1 lut 2017 · The objective of this paper is to present an experimentally validated mechanistic model to predict the oxygen transfer rate coefficient (Kla) in aeration tanks for different water temperatures.
mass transfer in porous materials All fluxes and flows (j,J, N, v’) are evaluated per total cross-sectional areas! No surface effects (modified Fick and diffusion-advection equations)
