Membranes in pervaporation

The performance of a membrane in pervaporation is based on the amount of liquid that permeates, pervaporation flux, which usually is expressed in kilogram per square meter hour, and the ability to separate the components in the mixture, which... 

FIGURE 10.19 (See color insert following page 588.) Distribution of publications about zeolite membranes in pervaporation during tbe last 10 years. (From ISI Web of Knowledge. Web of Science.)... 

Koops, G.H. Smolders, C.A. Estimation and evaluation of polymeric materials for pervaporation membranes. In Pervaporation Membrane Separation Processes Huang, R.Y.M., Ed. Elsevier New York, 1991 253-278. 

Table 9.6 summarizes the relative ease of VOC separation using silicone rubber membranes in pervaporation mode. As the Henry s Law coefficient decreases, pervaporation becomes less selective and less competitive to other approaches, such as steam stripping. 

C.K. Yoem and K.-H. Lee, Characterization of sodium alginate and poly(vinyl alcohol) blend membranes in pervaporation separation, J. Appl. Polym. Sci., 1998, 67, 949-959. 

M. Khayet, J. P. G. Villaluenga, M. P. Godino, J. I. Mengual, B. Seoane, K. C. Khulbe, and T. Matsuura. Preparation and application of dense poly(phen-ylene oxide) membranes in pervaporation. J. Colloid Interface ScL, 278(2) 410-422, October 2004. 

Fadeev AG, Meagher MM, Kelley SS, Volkov VV. 2000. Fouling of poly[-l-(trimethylsilyl)-l-propyne] membranes in pervaporative recovery of butanol from aqueous solutions and ABE fermentation broth. J. Membr. Sci. 173 133-144. 

FIGURE 11.19 Distribution of publications about zeolite membranes in pervaporation over the last decade (a) per year (b) per zeolite-type material. 

FIGURE 34.6 Characteristics of permeation and separation for aqueous ethanol solutions through the chitosan ( ) and GAC ( ) membranes in pervaporation. (From Uragami, T. and Takigawa, K., Polymer, 31, 668, 1990.)... 

Dobrak A, Figoli A, Chovau S, Galiano F, Simone S, Vankelecom IF, Drioli E and Vander Bruggen B (2010), Performance of PDMS membranes in pervaporation effect of sUicalite fillers and comparison with SBS membranes , / Colloid InterfSd, 346,254-64. 

Novel carbohydrate polymeric blend membranes in pervaporation dehydration of acetic add. Carbohydr. Polym., 66, 345-351. 

A. Dobrak, A. Figoli, S. Chovau, F. Galiano, S. Simone, I.F.J. Vankelecom, E. Drioli, and B. Van der Bruggen, Performance of PDMS membranes in pervaporation Effect of silicalite fillers and comparison with SBS membranes. Journal of Colloid and Interface... 

Izak, P. Friess, K. Hynek, V. Ruth, W. Fei, Z. Dyson, J. P. Kragl, U. (2009). Separation properties of supported ionic liquid-polydimethylsiloxane membrane in pervaporation process. Desalination, 241,182-187, ISSN 0011-9164. 

In liquid separation, hollow fiber membranes based on PBI have shown excellent performance for pervaporation dehydration of organic liquids. For example, a dual layer PEI-PBI hollow fiber membrane with an outer selective layer of PBI showed better performance than most other polymeric membranes in pervaporation dehydration of ethylene glycol. Sulfonation modifications of PBI membranes have demonstrated excellent separation efficacies in the dehydration of acetic acid. Studies have shown that PBI hollow fiber membranes were effective in separating chromates from solutions. Also, PBI nanofiltration hollow fiber membranes are promising candidates as forward osmosis membranes. In gas separation, recent studies sponsored by the Department of Energy at Los Alamos National Laboratories and SRI International demonstrated potential applications of PBI membranes in carbon capture and Hj purification from synthesis gas streams at elevated temperatures. H2/CO2 selectivity > 40 has been achieved at H2 permeability of 200 GPU at 250°C. ... 

The use of polymeric catalytic membranes in pervaporation-assisted catalysis applied to non-esterification readions has also been referred in recent reviews. ... 

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