Novel single-step hydrophobic modification of polymeric hollow fiber membranes containing imide groups: Its potential for membrane contactor application

2012 ◽  
Vol 101 ◽  
pp. 76-84 ◽  
Author(s):  
Yuan Zhang ◽  
Rong Wang ◽  
Lizhi Zhang ◽  
Anthony G. Fane
Keyword(s):  
Hollow Fiber ◽  
Single Step ◽  
Membrane Contactor ◽  
Hydrophobic Modification ◽  
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).

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 Single‐Step Scalable Fabrication of Zeolite MFI Hollow Fiber Membranes for Hydrocarbon Separations

2020 ◽  
Vol 7 (19) ◽  
pp. 2000926 ◽  
Author(s):  
Byunghyun Min ◽  
Shaowei Yang ◽  
Akshay Korde ◽  
Christopher W. Jones ◽  
Sankar Nair
Keyword(s):  
Hollow Fiber ◽  
Single Step ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

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
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