Topic
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: In this article, the effect of the presence in clean water of some compounds usually encountered in biological media and quantifying their consequences on liquid-side mass transfer coefficients was investigated, and it was shown that even if the properties of clean water (density, viscosity, surface tension) were not significantly changed by the addition of salts (NaCl), the liquid-sensor transfer coefficients could be, all the same, modified.
148 citations
TL;DR: In this paper, the effect of spacer geometry on fluid dynamics and mass transfer in feed channels of spiral wound membranes has been investigated, and three-dimensional computational fluid dynamics (CFD) simulations reveal significant influence of the spacer geometric parameters such as filament spacing, thickness, and flow attack angle on wall shear rates and Mass Transfer coefficients.
147 citations
TL;DR: Investigation of thin-film polymer-coated glass surfaces or POGs as passive air samplers found relationships based on the air-side mass transfer coefficient and K(EVA-A) were developed for PCBs that allow air concentrations to be determined from the amount of chemical accumulated in the POG.
Abstract: The use of thin-film polymer-coated glass surfaces or POGs as passive air samplers was investigated during an uptake experiment in an indoor environment with high levels of gas-phase polychlorinated biphenyls (PCBs). POGs consisted of a micron thick layer of ethylene vinyl acetate (EVA) coated onto glass cylinders. The uptake was initially linear with time and governed by the air-side mass transfer coefficient and surface area of the sampler. This was followed by a curvilinear region and finally a constant phase when equilibrium was established between air and EVA. The high surface area-to-volume ratio of the POGs allowed rapid equilibrium with gas-phase PCBs; equilibration times were on the order of hours for the low molecular weight congeners. The equilibrium concentration was dependent on the EVA-air partition coefficient, KEVA-A, which was shown to be very well correlated to the octanol−air partition coefficient, KOA. When POGs of varying thickness were equilibrated with air, the amount of PCB accumul...
147 citations
TL;DR: In this article, the mass transfer rate of oxygen in the presence of very fine, nanometer size particles or droplets was investigated both experimentally, using organic submicron n-hexadecane droplets, and theoretically, using both homogeneous and heterogeneous mathematical models.
146 citations
TL;DR: In this article, a film-pore diffusion model has been used to predict the fixed-bed breakthrough curves for each of the four metal ions in a single component adaption system.
146 citations