Long term filtration modelling and scaling up of mixed matrix ultrafiltration hollow fiber membrane: a case study of chromium(VI) removal

2019 ◽  
Vol 570-571 ◽  
pp. 204-214 ◽  
Author(s):  
Raka Mukherjee ◽  
Prasenjit Bhunia ◽  
Sirshendu De
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Scaling Up ◽  
Fiber Membrane ◽  
Mixed Matrix ◽  
Chromium Vi

scholarly journals Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

2021 ◽  
Author(s):  
Honglei Pang ◽  
Yayu Qiu ◽  
Weipeng Sheng
Keyword(s):  
Carbon Dioxide ◽  
Flow Rate ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Inorganic Nanoparticles ◽  
Inversion Method ◽  
Stable Operation ◽  
Fiber Membrane ◽  
Operation Performance

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.

Effect of MIL-53 on phase inversion and gas separation performance of mixed matrix hollow fiber membranes

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69124-69134 ◽  
Author(s):  
Haitao Zhu ◽  
Xingming Jie ◽  
Lina Wang ◽  
Guodong Kang ◽  
Dandan Liu ◽  
...  
Keyword(s):  
Solvent Effect ◽  
Gas Separation ◽  
Hollow Fiber ◽  
Membrane Structure ◽  
Phase Inversion ◽  
Hollow Fiber Membrane ◽  
Separation Performance ◽  
Fiber Membrane ◽  
Mixed Matrix ◽  
Gas Separation Performance

The MIL-53 non-solvent effect influenced the phase inversion of spinning dope, and the MOF-containing hollow fiber membrane structure was optimized.

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