Preparation and characterization of OH/SiO2-TiO2/PES composite hollow fiber membrane using gas-liquid membrane contactor for CO2/CH4 separation

Lin, Zhengda; Liu, Yijun; Zhang, Zhongming; Yao, Jie

doi:10.1016/j.seppur.2022.120551

Cited by 14 publications

(5 citation statements)

References 48 publications

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“…At the same time, an increase in the feed gas flow rate reduces the residence time, which reduces the rate of mass transfer, and thus, reduces the rate of CO2 absorption along with the membrane gas-phase compartment (membrane unit envelope side). Similar results were reported in previous studies [38][39][40]. This indicates that the residence time strongly impacts the CO2 removal rate.…”

Section: Gas Feed Perturbationsupporting

confidence: 91%

Modeling and Simulation of the Impact of Feed Gas Perturbation on CO2 Removal in a Polymeric Hollow Fiber Membrane

Ghasem

2022

Polymers

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A membrane contactor is a device that attains the transfer of gas/liquid or liquid/liquid mass without dispersion of one phase within another. Membrane contactor modules generally provide 30 times more surface area than can be achieved in traditional gas absorption towers and 500 times what can be obtained in liquid/liquid extraction columns. By contrast, membrane contactor design has limitations, as the presence of the membrane adds additional resistance to mass transfer compared with conventional solvent absorption systems. Increasing mass transfer in the gas and solvent phase boundary layers is necessary to reduce additional resistance. This study aims to increase the mass transfer in the gas phase layer without interfering with membrane structure by oscillating the velocity of the feed gas. Therefore, an unsteady state mathematical model was improved to consider feed gas oscillation. The model equation was solved using Comsol Multiphysics version 6.0. The simulation results reveal that the maximum CO2 removal rate was about 30% without oscillation, and at an oscillation frequency of 0.05 Hz, the CO2 percent removal was almost doubled.

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Section: Gas Feed Perturbationsupporting

confidence: 91%

Modeling and Simulation of the Impact of Feed Gas Perturbation on CO2 Removal in a Polymeric Hollow Fiber Membrane

Ghasem

2022

Polymers

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“…They reported a stable CO2 removal efficiency of about 90% for over 100 h of the gas-liquid membrane contactor operation. Lin et al [11] grafted fluorinated SiO2 and TiO2 on the surface of polyether sulfone (PES) by hydrolyzing silicon precursors and titanium precursors at high temperature in order to improve anti-corrosion and hydrophobicity of the flat-sheet PES membranes. The CO2 absorption flux of 10.11 × 10 -3 mol/m 2 s and the CO2/CH4 separation factor of 554.89 were found for the improved fluorinated OH/SiO2-TiO2/PES membrane.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Modification of Polyetherimide Hollow Fiber Membrane Contactor by 2-(Perfluoroalkyl) Ethanol Coating for Carbon Dioxide Absorption

Ahmadpour

Mansourizadeh

2022

AMST

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Highly porous polyether imide (PEI) hollow fiber membranes were fabricated through a phase-inversion process. Surface modification of the membranes was performed by coating an ultra-thin layer of 2-(perfluoroalkyl) ethanol (ZONYL). The properties of the prepared membranes were evaluated through field emission scanning electronic microscopy (FESEM), water contact angle, N2 permeation, overall porosity, critical water entry pressure (CEPw) and collapsing pressure experiments. From FESEM, the PEI membrane showed an open structure with large finger-likes cavities. By coating the ZONYL layer, the modified membrane presented improved outer surface water contact angle (105 °), CEPw (450 kPa), and collapsing pressure (750 kPa). The improved PEI-ZONYL membrane presented an almost stable CO2 absorption flux (6.8×10-4 mol/m2 s) during 72 h of the gas-liquid membrane contactor operation while a significant flux reduction was observed for the plain PEI membrane. Therefore, the improved membrane with high surface hydrophobicity and porosity can be a promising candidate for high performance gas-liquid membrane contactors.

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“…According to their investigation, the Teflon-PP composite membrane offers better stability while the PTFE membrane exhibited higher CO 2 flux. However, both membranes showed good thermal stability at 100 • C for 6 h. Lin et al [100] employed a high-temperature steam-induced hydrolysis technique to prepare a fluorinated OH/SiO 2 -TiO 2 /PES composite hollow fiber membrane. It was found that SiO 2 and TiO 2 can significantly affect the surface hydrophobicity of composite membranes.…”

Section: Composite Membranesmentioning

confidence: 99%

“…In addition, it was observed that increasing the glycerol concentration from 10 wt% to 35 wt% causes a significant enhancement in CO 2 removal while a further increase up to 50 wt% in concentration decreased CO 2 removal due to an increase in the viscosity of the solution, which leads to an increase in the resistance of mass transfer and a reduction in the fluid mobility. Lin et al [100] tested PES composite hollow fiber membranes for CO 2 capture under different gas and liquid flow rates. According to their observation, higher CO 2 flux and separation efficiency can be achieved as the flow rate of the liquid increases from 2 to 16 L/h.…”

Section: Operating Parametersmentioning

confidence: 99%

A Review on Hollow Fiber Membrane Contactors for Carbon Capture: Recent Advances and Future Challenges

2022

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Energy need is predicted to increase by 48% in the next 30 years. Global warming resulting from the continuously increasing atmospheric CO2 concentration is becoming a serious and pressing issue that needs to be controlled. CO2 capture and storage/use (CCS/CCU) provide a promising route to mitigate the environmental consequences of CO2 emission from fossil fuel combustion. In recent years, hollow fiber membrane contactors are regarded as an advanced technique with several competitive advantages over conventional technologies such as easy scale-up, independent control of flow rates, more operational flexibility, absence of flooding and foaming as well as high interfacial area per unit volume. However, many factors such as the membrane material selection, proper choice of solvent, and membrane module design are critical to success. In this regard, this paper aims at covering all areas related to hollow fiber membranes, including membrane material, membrane modification, membrane surface modification, shape, solvent characterization, operating parameters and costs, hybrid process, membrane lifetime, and energy consumption as well as commercially available systems. Current progress, future potential, and development of pilot-scale applications of this strategy are also assessed carefully. Furthermore, pore wetting as the main technical challenge in membrane contactor industrial implementation for post- and pre-combustion CO2 capture processes is investigated in detail.

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Preparation and characterization of OH/SiO2-TiO2/PES composite hollow fiber membrane using gas-liquid membrane contactor for CO2/CH4 separation

Cited by 14 publications

References 48 publications

Modeling and Simulation of the Impact of Feed Gas Perturbation on CO2 Removal in a Polymeric Hollow Fiber Membrane

Modeling and Simulation of the Impact of Feed Gas Perturbation on CO2 Removal in a Polymeric Hollow Fiber Membrane

Hydrophobic Modification of Polyetherimide Hollow Fiber Membrane Contactor by 2-(Perfluoroalkyl) Ethanol Coating for Carbon Dioxide Absorption

A Review on Hollow Fiber Membrane Contactors for Carbon Capture: Recent Advances and Future Challenges

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