scholarly journals Biocatalytic PVDF composite hollow fiber membranes for CO2 removal in gas-liquid membrane contactor

2019 ◽  
Vol 572 ◽  
pp. 532-544 ◽  
Author(s):  
Yilin Xu ◽  
Yuqing Lin ◽  
Nick Guan Pin Chew ◽  
Chandresh Malde ◽  
Rong Wang
Keyword(s):  
Hollow Fiber ◽  
Liquid Membrane ◽  
Co2 Removal ◽  
Membrane Contactor ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

scholarly journals Surface Modified Polysulfone Hollow Fiber Membranes for Ethane/Ethylene Separation Using Gas-Liquid Membrane Contactors with Ionic Liquid-Based Absorbent

Fibers ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 4 ◽  
Author(s):  
Margarita Kostyanaya ◽  
Stepan Bazhenov ◽  
Ilya Borisov ◽  
Tatiana Plisko ◽  
Vladimir Vasilevsky
Keyword(s):  
Hollow Fiber ◽  
Liquid Membrane ◽  
Membrane Contactor ◽  
Layer By Layer ◽  
Hollow Fiber Membranes ◽  
Acrylic Copolymer ◽  
Promising Alternative ◽  
Silver Salts ◽  
Fiber Membranes ◽  
Membrane Contactors

Olefin/paraffin separation is an important technological process. A promising alternative to conventional energy-consuming methods is employment of gas-liquid membrane contactors. In the present work, the membranes used were polysulfone (PSf) asymmetrical porous hollow fibers fabricated via the NIPS (non-solvent induced phase separation) technique in the free spinning mode. The surface of the fine-pored selective layer from the lumen side of the fibers was modified by layer-by-layer deposition of perfluorinated acrylic copolymer Protect Guard® in order to hydrophobized the surface and to avoid penetration of the liquid absorbent in the porous structure of the membranes. The absorbents studied were silver salts (AgNO3 and AgBF4) solutions in five ionic liquids (ILs) based on imidazolium and phosphonium cations. The membranes were analyzed through gas permeance measurement, SEM and dispersive X-ray (EDXS). Contact angle values of both unmodified and modified membranes were determined for water, ethylene glycol, ILs and silver salts solutions in ILs. It was shown that the preferable properties for employment in membrane contactor refer to the PSf hollow fiber membranes modified by two layers of Protect Guard®, and to the absorbent based on 1 M AgNO3 solution in 1-ethyl-3-methylimidazolium dicyanamide. Using the membrane contactor designed, ethylene/ethane mixture (80/20) separation was carried out. The fluxes of both components as well as their overall mass transport coefficients (MTC) were calculated. It was shown that the membrane absorption system developed provides absorption of approx. 37% of the initial ethylene volume in the mixture. The overall MTC value for ethylene was 4.7 GPU (gas permeance unit).

Polysulfone porous hollow fiber membranes for ethylene-ethane separation in gas-liquid membrane contactor

2017 ◽  
Vol 183 ◽  
pp. 162-172 ◽  
Author(s):  
Anna Ovcharova ◽  
Vladimir Vasilevsky ◽  
Ilya Borisov ◽  
Stepan Bazhenov ◽  
Alexey Volkov ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Liquid Membrane ◽  
Membrane Contactor ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

Thin-film composite hollow fiber membranes for ethylene/ethane separation in gas-liquid membrane contactor

2019 ◽  
Vol 219 ◽  
pp. 64-73 ◽  
Author(s):  
A.O. Malakhov ◽  
S.D. Bazhenov ◽  
V.P. Vasilevsky ◽  
I.L. Borisov ◽  
A.A. Ovcharova ◽  
...  
Keyword(s):  
Thin Film ◽  
Hollow Fiber ◽  
Liquid Membrane ◽  
Membrane Contactor ◽  
Hollow Fiber Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Fiber Membranes

scholarly journals Mathematical modeling and process parametric study of CO2 removal from natural gas by hollow fiber membranes

2019 ◽  
Vol 148 ◽  
pp. 45-55 ◽  
Author(s):  
Yunhan Chu ◽  
Arne Lindbråthen ◽  
Linfeng Lei ◽  
Xuezhong He ◽  
Magne Hillestad
Keyword(s):  
Mathematical Modeling ◽  
Natural Gas ◽  
Hollow Fiber ◽  
Parametric Study ◽  
Co2 Removal ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

scholarly journals Acidic sweep gas with carbonic anhydrase coated hollow fiber membranes synergistically accelerates CO2 removal from blood

2015 ◽  
Vol 25 ◽  
pp. 143-149 ◽  
Author(s):  
D.T. Arazawa ◽  
J.D. Kimmel ◽  
M.C. Finn ◽  
W.J. Federspiel
Keyword(s):  
Carbonic Anhydrase ◽  
Hollow Fiber ◽  
Co2 Removal ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes
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