Study on the pervaporation performance and long-term stability of aqueous iso-propanol solution through chitosan/polyacrylonitrile hollow fiber membrane

Abstract To obtain a long-term stable operation of the hollow fiber membrane for using in membrane contact absorption of carbon dioxide (CO2), hybrid polyvinylidene fluoride-silica-hexadecyltrimethoxysilane (PVDF-SiO2-HDTMS) membrane were fabricated via the non-solvent induced phase-inversion method. The surface properties, performance characteristics and long-term stable operation performance of the prepared membranes were compared and analyzed. The results show the outer surface of the prepared membranes exhibited superhydrophobicity because of the formation of rough nano-scale microstructures and the low surface free energy. Due to the addition of inorganic nanoparticles, the mechanical strength of PVDF-SiO2-HDTMS membranes were improved. The long-term stable operation experiments were carried out with the inlet gas (CO2/N2 = 19/81, v/v) at a flow rate of 20 mL/min and the absorbent liquid (1 mol/L DEA) at a flow rate of 50 mL/min. And the result showed that the mass transfer flux of PVDF-SiO2-HDTMS membrane decreased from the initial value of 2.39×10-3 mol/m2s to 2.31×10-3 mol/m2s, which was a decrease of 3% after 20 days. The main benefit is the addition of inorganic nanoparticles, which have strong chemical resistance and high hydrophobicity, thereby preventing structural damage and pore wetting of the membrane. PVDF-SiO2-HDTMS membrane exhibits excellent long-term stable operation performance of CO2.

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High pressure removal of acid gases using hollow fiber membrane contactors: Further characterization and long-term operational stability

Journal of Natural Gas Science and Engineering ◽

10.1016/j.jngse.2016.11.039 ◽

2017 ◽

Vol 37 ◽

pp. 192-198 ◽

Cited By ~ 9

Author(s):

Mohamed H. Al-Marzouqi ◽

Sayed A.M. Marzouk ◽

Nadia Abdullatif

Keyword(s):

High Pressure ◽

Hollow Fiber ◽

Hollow Fiber Membrane ◽

Operational Stability ◽

Fiber Membrane ◽

Acid Gases ◽

Membrane Contactors

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A CSTR-hollow-fiber system for continuous hydrolysis of proteins. Factors affecting long-term stability of the reactor

Biotechnology and Bioengineering ◽

10.1002/bit.260240107 ◽

1982 ◽

Vol 24 (1) ◽

pp. 69-82 ◽

Cited By ~ 34

Author(s):

W. David Deeslie ◽

Munir Cheryan

Keyword(s):

Hollow Fiber ◽

Fiber System ◽

Factors Affecting ◽

Term Stability ◽

Long Term Stability ◽

Hydrolysis Of

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One-Step Thermal Processing of BaCe0.8Y0.2O3-δ Hydrogen Permeable Multi-Channel Hollow Fiber Membrane

10.22541/au.163253495.50334833/v1 ◽

2021 ◽

Author(s):

Tianlei Wang ◽

Zheng Fan ◽

Shoufei Wang ◽

Qiankun Zheng ◽

Jinkun Tan ◽

...

Keyword(s):

Hollow Fiber ◽

Thermal Processing ◽

Hydrogen Permeation ◽

Sintering Temperature ◽

Hollow Fiber Membrane ◽

Fiber Membrane ◽

Barium Cerate ◽

Long Term Stability ◽

Fiber Fabrication ◽

One Step

Yttrium-doped barium cerate (BaCeYO, BCY) is the most widely studied proton conducting material and is frequently fabricated as dense membranes for hydrogen separation. However, the difficulty to prepare dense BCY membranes is the extremely high sintering temperature, normally higher than 1500 oC. Herein, the BCY 7-channel hollow fiber membrane was prepared by one-step thermal processing (OSTP). It proved that adding CoO as sintering aid is beneficial to the densification and 1wt% CoO was the optimum addition to form a homogeneous phase structure. The dense sintering temperature was greatly reduced from over 1500 to 1350 C. The hydrogen permeation flux of the BCY hollow fiber membrane reached up to 0.34 ml mincm at 900 C. The long-term stability test last for 300 h. The properties of OSTP samples were demonstrated to be essentially higher than samples made by conventional ceramic hollow fiber fabrication methods.

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