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Mass transfer coefficient
About: Mass transfer coefficient is a research topic. Over the lifetime, 7827 publications have been published within this topic receiving 168354 citations.
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TL;DR: The main goal of this paper is targeted to the utilization of CFD simulation using commercial CFD package FLUENT to predict the concentration polarization profile, mass transfer coefficient and wall shear stress under different types of conditions in the empty narrow membrane channel.
70 citations
TL;DR: In this article, mass transfer from 3/8-and 1/2-in-diameter spheres of adipic acid into a controlled stream of water passing in laminar flow through a 3-in.-diameter pipe is found to be correlated by the single equaton NSh = 2 + 0.95 NRe 0.5 NSc 0.33 for sphere Reynolds numbers between 100 and 700.
Abstract: Mass transfer from 3/8- and 1/2-in.–diameter spheres of adipic acid and from 3/8-, 1/2-, 5/8- and 3/4-in.-diameter spheres of benzoic acid into a controlled stream of water passing in laminar flow through a 3-in.-diameter pipe is found to be correlated by the single equaton NSh = 2 + 0.95 NRe0.5NSc0.33 for sphere Reynolds numbers between 100 and 700. The limitations on the application of this equation, due to mass transfer by natural convection, are discussed. Correlations are also obtained for transfer from separate regions of the sphere surface.
Skin–friction-drag coefficients for single fixed spheres have been calculated from reported pressure distributions for Reynolds numbers between 100 and 1,000.
Good agreement is obtained between the mass transfer j factor and other reported values for heat transfer, but comparison with the calculated frictional forces indicates that the equality proposed by Colburn (3) does not hold, because the distributions of the mass transfer and the skin friction over the surface differ.
70 citations
TL;DR: The main conductivity coefficients are found to become large near the critical point, consistent with the disappearance of the surface in this limit, and the resistivity coupling coefficient predicted by simulations also agrees with values predicted by kinetic theory from the triple point until about halfway to thecritical point.
70 citations
TL;DR: In this paper, the authors investigated the effect of bubble distribution and its effects on the gas-liquid mass transfer in a pressurized bubble column whose diameter and height are 0.152 and 2.0 m, respectively.
70 citations
TL;DR: In this article, a simple technique for determining cathode mass transfer coefficients in full scale electrowinning cells is discussed, which involves the determination of the limiting current for mass transfer controlled codeposition of silver in the cathode deposit.
Abstract: A recently developed, simple technique for determining cathode mass transfer coefficients in full scale electrowinning cells is discussed. The approach involves the determination of the limiting current for mass transfer controlled codeposition of silver in the cathode deposit. A rotating disk electrode was used to establish the validity of the method. Examples demonstrate the usefulness of the method for mapping local values of the mass transfer coefficient on the cathode under typical natural and forced convection flow regimes in electrowinning cells.
70 citations