Mathematical modeling of CO2 separation using different diameter hollow fiber membranes

Ghobadi, Jalil; Ramirez, David; Khoramfar, Shooka; Kabir, Md. Jahangir; Jerman, Robert; Saeed, Muhammad

doi:10.1016/j.ijggc.2020.103204

Cited by 15 publications

(13 citation statements)

References 37 publications

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“…Xiao et al [ 37 ] applied a fractal model for the capillary flow through a single tortuous capillary with rough surfaces in fibrous porous media. Ghobadi et al [ 38 ] conducted a 2D mass-transfer simulation model, using computational fluid dynamics (CFD) for separation of CO 2 from a binary gas mixture of CO 2 /CH 4 by means of polytetrafluoroethylene (PTFE) hollow-fiber membrane contactor.…”

Section: Introductionmentioning

confidence: 99%

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

Knozowska

Kujawa

et al. 2021

Polymers

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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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Section: Introductionmentioning

confidence: 99%

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

Knozowska

Kujawa

et al. 2021

Polymers

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“…These models assume isothermal flow and do not consider the energy balance. Analogous assumptions were made by Lock et al, Ghobadi et al, and Chu et al for the modeling of CO 2 removal from natural gas in hollow fiber membranes. Chu et al ignored the Joule–Thomson effect due to the expected high heat-transfer coefficients of the membrane material.…”

Section: Introductionmentioning

confidence: 93%

Modeling and Simulation of Industrial Gas Permeators Accounting for Vapor Phase Nonideality

Crivellari

Moretti

Filho

et al. 2022

Ind. Eng. Chem. Res.

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Associated gas produced in offshore fields may present high CO2 concentrations. The separation of this compound from the hydrocarbon fraction is accomplished by permeation through polymeric membranes. In this study, a model based on the solution-diffusion model which simultaneously accounts for the vapor-phase nonideality is presented. To evaluate the model, industrial plant design and actual operational conditions were used. Industrial data were cleaned, grouped, and selected, yielding field data representing the operation conditions. Through computational simulations, both the adherence to the expected behavior and the ability to reproduce the operational results were evaluated. The developed model was able to reproduce most of the real operational situations. The influence of thermodynamic and transport parameters on the model performance is discussed.

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“…Most of the literature defines the diffusion coefficient of CO 2 in the membrane as eq − : D normalm , CO 2 = ε D normals , CO 2 τ where τ is the tortuosity factor.…”

Section: Theorymentioning

confidence: 99%

Experimental and Numerical Analysis for Improving CO₂ Mass Transfer Performance of Blended Solvents in Hollow Fiber Membrane Contactors

Yin,

Gao,

Liang

2023

Ind. Eng. Chem. Res.

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In this study, the COMSOL Multiphysics simulation software, based on the finite element analysis method, was used to numerically simulate the CO2 mass transfer process in laminar flow and turbulent flow in a hollow fiber membrane contactor. The established simulation model was verified by comparing the simulated value of the CO2 absorption flux in a diethylaminoethanol/3-methylaminopropylamine mixed solution with the actual process value. It was found that the laminar flow model with 5% membrane wettability is in good agreement with the experimental value, with an average relative error of only 2.64%, indicating that the actual degree of membrane wetting during the experiment is indeed 5%. In addition, the effects of operating parameters and membrane process optimization on the velocity field, concentration field, and mass transfer process in the membrane contactor were studied taking into consideration both the diffusion effect and the convection effect. From the analysis of the simulation results, it can be seen that the membrane-phase resistance dominates when the membrane is wetted, and the optimization of the operating parameters under these conditions makes limited improvement in the mass transfer performance. Given the inevitability of membrane wetting in practical long-term applications, increasing the degree of fluid turbulence and the series connection of multistage membrane modules are both good methods to promote mass transfer.

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Mathematical modeling of CO2 separation using different diameter hollow fiber membranes

Cited by 15 publications

References 37 publications

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

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

Modeling and Simulation of Industrial Gas Permeators Accounting for Vapor Phase Nonideality

Experimental and Numerical Analysis for Improving CO₂ Mass Transfer Performance of Blended Solvents in Hollow Fiber Membrane Contactors

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Mathematical modeling of CO2 separation using different diameter hollow fiber membranes

Cited by 15 publications

References 37 publications

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

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

Modeling and Simulation of Industrial Gas Permeators Accounting for Vapor Phase Nonideality

Experimental and Numerical Analysis for Improving CO2 Mass Transfer Performance of Blended Solvents in Hollow Fiber Membrane Contactors

Contact Info

Product

Resources

About

Experimental and Numerical Analysis for Improving CO₂ Mass Transfer Performance of Blended Solvents in Hollow Fiber Membrane Contactors