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Separation of butane isomers by MFI membranes synthesized in a flow system
Date
2006-09-28
Author
Çulfaz Emecen, Pınar Zeynep
Kalıpçılar, Halil
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https://hdl.handle.net/11511/71583
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Separation of butane isomers by MFI membranes synthesized in a flow system
Çulfaz Emecen, Pınar Zeynep; Kalıpçılar, Halil (Elsevier BV, 2006-11-20)
MFI type zeolites are the most widely studied zeolites for membrane separations. Conventionally, zeolite membranes are prepared in batch systems by hydrothermal synthesis [1–3]. This method has several disadvantages for use in industrial scale for the synthesis of membranes with large areas and complex geometries that are commonly used in membrane modules. An alternative to batch synthesis is using a flow system where the synthesis solution is flown over the support. In a flow system, much better homogeneit...
Separation of gas and organic/water mixtures by MFI type zeolite membranes synthesized in a flow system
Soydas, Belma; Dede, Oezlem; Culfaz, Ali; Kalıpçılar, Halil (Elsevier BV, 2010-01-01)
MFI type zeolite membranes were synthesized in a recirculating flow system at 95 degrees C where the synthesis solution was flown over the tubular alpha-alumina supports. The performance of the membranes for the separation of binary gas mixtures and alcohol/water liquid mixtures was investigated. A membrane synthesized by two consecutive synthesis steps had a separation selectivity of 15 and 11 for equimolar mixtures of n-C4H10/CH4 and n-C4H10/N-2 at 200 degrees C, respectively. The membrane selectively per...
Separation of C-4 and C-6 isomer mixtures and alcohol-water solutions by monolith supported B-ZSM-5 membranes
Bowen, TC; Kalıpçılar, Halil; Falconer, JL; Noble, RD (2002-09-10)
Separation of arsenite and arsenate species from water by charged ultrafiltration membranes
Sezdi, Ayşegül; Özbelge, Ayşe Tülay; Department of Chemical Engineering (2012)
Arsenic is found in drinking waters in many countries and since maximum allowable concentration is as low as 10 µg/L, there are many research efforts to separate it from water. Membrane methods are used more and more widely in separation operations in recent years. Arsenic is mainly present in water as arsenite [As(III)] and arsenate [As(V)]. As pH of water changes, molecular formulas of As(III) and As(V) change. In this study, the performance of different ultrafiltration membranes for arsenic removal from ...
Separation of chromate and borate anions by polymer enhanced ultrafiltration from aqueous solutions employing specifically tailored polymers
Oktar Doğanay, Ceren; Özbelge, H. Önder; Department of Chemical Engineering (2007)
In this study two polychelatogens for borate and a polyelectrolyte for chromate retention (R) were designed for investigating the effect of pH and loading (g metal /g polymer) on the separation performances of the synthesized polymers using continuous polymer enhanced ultrafiltration. Increase in pH increased the retention of borate for all of the synthesized polymers. Decrease in the loading resulted in an enhancement in boron retention with PNSM and PNSL. When COP was utilized, retentions remained almost ...
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P. Z. Çulfaz Emecen and H. Kalıpçılar, “Separation of butane isomers by MFI membranes synthesized in a flow system,” 2006, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/71583.