Transport of binary water–ethanol mixtures through a multilayer hydrophobic zeolite membrane

Pervaporation of Ethanol/Water Mixtures Through a High-Silica MFI Membrane: Comparison of Different Semi-Empirical Mass Transfer Models

“…As illustrated in Fig. 4, the temperature dependence of the total flux is both qualitatively and quantitatively the same regardless of the change in the feed composition, as observed also in the study by Weyd et al [21].…”

“…As reported in Korelskiy et al [26] the mass transfer resistance of the support may contribute to nearly 80% of the total resistance with a very thin 0.5 µm membrane. Instead, Weyd et al [21] reported a support pressure drop of 450 Pa, which was approximately 5% of the total resistance, with a thick 50 µm membrane. Thus, the support may have a significant contribution to the mass transfer resistance of the membrane especially when the selective film is thin.…”

“…The membrane support may have a significant contribution to the total mass transfer resistance [21,26,[49][50][51]. The role of the support should be taken into account since the mass transfer resistance over the support limits the fluxes by lowering the effective fugacity difference across the zeolite film.…”

“…Zeolite membranes are typically synthesized on porous inorganic supports, which are needed to supply the mechanical strength to the thin membranes. The MFI membranes prepared are typically tens of micrometers [16,17,[19][20][21] or several hundreds of micrometers thick [22][23][24]. However, as thin as ca.…”

A non-equilibrium thermodynamics approach to model mass and heat transport for water pervaporation through a zeolite membrane

“…The values used for the calculation are typical values [52,53], given in Table 5. These data include the porosity, , the tortuosity, , the layer thickness, ı, of the support material, and the average pore diameter, d p , estimated from the ␣-alumina particle size, d part , using [54] …”