Fast surface crosslinking ceramic hollow fiber pervaporation composite membrane with outstanding separation performance for isopropanol dehydration

2020 ◽  
Vol 234 ◽  
pp. 116116 ◽  
Author(s):  
Xin Zhang ◽  
Meng-Ping Li ◽  
Zhi-Hao Huang ◽  
Hao Zhang ◽  
Wei-Liang Liu ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Hollow Fiber ◽  
Separation Performance ◽  
Isopropanol Dehydration

scholarly journals The Effects of PEI Hollow Fiber Substrate Characteristics on PDMS/PEI Hollow Fiber Membranes for CO2/N2 Separation

Membranes ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 56
Author(s):  
Guoqiang Li ◽  
Wojciech Kujawski ◽  
Katarzyna Knozowska ◽  
Joanna Kujawa
Keyword(s):  
Flow Rate ◽  
Composite Membrane ◽  
Hollow Fiber ◽  
Composite Membranes ◽  
Hollow Fibers ◽  
Separation Performance ◽  
Fluid Composition ◽  
Hollow Fiber Membranes ◽  
Ideal Selectivity ◽  
Fiber Membranes

The CO2 separation from flue gas based on membrane technology has drawn great attention in the last few decades. In this work, polyetherimide (PEI) hollow fibers were fabricated by using a dry-jet-wet spinning technique. Subsequently, the composite hollow fiber membranes were prepared by dip coating of polydimethylsiloxane (PDMS) selective layer on the outer surface of PEI hollow fibers. The hollow fibers spun from various spinning conditions were fully characterized. The influence of hollow fiber substrates on the CO2/N2 separation performance of PDMS/PEI composite membranes was estimated by gas permeance and ideal selectivity. The prepared composite membrane where the hollow fiber substrate was spun from 20 wt% of dope solution, 12 mL/min of bore fluid (water) flow rate exhibited the highest ideal selectivity equal to 21.3 with CO2 permeance of 59 GPU. It was found that the dope concentration, bore fluid flow rate and bore fluid composition affect the porous structure, surface morphology and dimension of hollow fibers. The bore fluid composition significantly influenced the gas permeance and ideal selectivity of the PDMS/PEI composite membrane. The prepared PDMS/PEI composite membranes possess comparable CO2/N2 separation performance to literature ones.

Porous ceramic hollow fiber-supported Pebax/PEGDME composite membrane for CO2 separation from biohythane

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60453-60459 ◽  
Author(s):  
Jun Cheng ◽  
Leiqing Hu ◽  
Chaofan Ji ◽  
Junhu Zhou ◽  
Kefa Cen
Keyword(s):  
Composite Membrane ◽  
Hollow Fiber ◽  
Porous Ceramic ◽  
Co2 Separation ◽  
Excellent Performance ◽  
The Ideal

Ceramic hollow fiber-supported Pebax/PEGDME membrane was prepared to separate CO2. The composite membrane showed excellent performance of removing CO2 from biohythane. The ideal CO2/H2 selectivity increased to 26 when temperature decreased to 10 °C.

Hollow fiber composite membrane modules for reverse osmosis

Desalination ◽  
1977 ◽  
Vol 22 (1-3) ◽  
pp. 221-227 ◽  
Author(s):  
R.B. Davis ◽  
R.D. Burchesky ◽  
M.J. Coplan
Keyword(s):  
Reverse Osmosis ◽  
Composite Membrane ◽  
Hollow Fiber ◽  
Fiber Composite ◽  
Hollow Fiber Composite Membrane ◽  
Membrane Modules

scholarly journals Fabrication of Polydimethysiloxane (PDMS) Dense Layer on Polyetherimide (PEI) Hollow Fiber Support for the Efficient CO2/N2 Separation Membranes

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 756
Author(s):  
Guoqiang Li ◽  
Katarzyna Knozowska ◽  
Joanna Kujawa ◽  
Andrius Tonkonogovas ◽  
Arūnas Stankevičius ◽  
...  
Keyword(s):  
Gas Separation ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Dip Coating ◽  
Separation Performance ◽  
Dense Layer ◽  
Pdms Layer ◽  
Coating Method ◽  
Coating Time ◽  
Dip Coating Method

The development of thin layer on hollow-fiber substrate has drawn great attention in the gas-separation process. In this work, polydimethysiloxane (PDMS)/polyetherimide (PEI) hollow-fiber membranes were prepared by using the dip-coating method. The prepared membranes were characterized by Scanning Electron Microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and gas permeance measurements. The concentration of PDMS solution and coating time revealed an important influence on the gas permeance and the thickness of the PDMS layer. It was confirmed from the SEM and EDX results that the PDMS layer’s thickness and the atomic content of silicon in the selective layer increased with the growth in coating time and the concentration of PDMS solution. The composite hollow-fiber membrane prepared from 15 wt% PDMS solution at 10 min coating time showed the best gas-separation performance with CO2 permeance of 51 GPU and CO2/N2 ideal selectivity of 21.

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