Modeling and Simulation for Membrane Gas Separation Processes

Bandehali, Samaneh; Sanaeepur, Hamidreza; Amooghin, Abtin Ebadi; Moghadassi, Abdolreza

doi:10.1002/9781119536260.ch5

Cited by 5 publications

(4 citation statements)

References 75 publications

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“…The synthesis of nanoparticles with strong sorption of pollutants, high compatibility with membrane matrix, and a high specific surface is the most important. Additionally, the size of particles is a critical factor that affects the membrane’s mass transfer and separation performance, as well as the potential for their reuse [ 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

“…that affects the membrane's mass transfer and separation performance, as well as the potential for their reuse [30][31][32][33]. Although nanomaterials, particularly inorganic fillers, can provide excellent permeation pathways to active sites for the pollutant's adsorption, unwanted defects between the polymer matrix and the fillers, weak nanomaterial dispersion on the membrane surface or in the membrane structure, and nanomaterial agglomeration can greatly reduce the selective separation of pollutants [30].…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Covaliu-Mierlă,

Păunescu,

Iovu

2023

Membranes

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The presence of heavy metal ions in polluted wastewater represents a serious threat to human health, making proper disposal extremely important. The utilization of nanofiltration (NF) membranes has emerged as one of the most effective methods of heavy metal ion removal from wastewater due to their efficient operation, adaptable design, and affordability. NF membranes created from advanced materials are becoming increasingly popular due to their ability to depollute wastewater in a variety of circumstances. Tailoring the NF membrane’s properties to efficiently remove heavy metal ions from wastewater, interfacial polymerization, and grafting techniques, along with the addition of nano-fillers, have proven to be the most effective modification methods. This paper presents a review of the modification processes and NF membrane performances for the removal of heavy metals from wastewater, as well as the application of these membranes for heavy metal ion wastewater treatment. Very high treatment efficiencies, such as 99.90%, have been achieved using membranes composed of polyvinyl amine (PVAM) and glutaraldehyde (GA) for Cr3+ removal from wastewater. However, nanofiltration membranes have certain drawbacks, such as fouling of the NF membrane. Repeated cleaning of the membrane influences its lifetime.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Covaliu-Mierlă,

Păunescu,

Iovu

2023

Membranes

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“…Membrane gas separation is a predominant unit operation compared to other gas separation techniques, such as distillation, adsorption, and absorption [1,2]. The membrane process is more feasible because of its smooth operation, low cost, reliability, small heat effects, and higher separation performance [3].…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

Qadir

Ahsan

Hussain³

2023

Gases

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The membrane gas separation process has gained significant attention using the computational fluid dynamics (CFD) technique. This study considered the CFD method to find gas concentration profiles in a hollow fiber membrane (HFM) module to separate the binary gas mixture. The membrane was considered with a fiber thickness where each component’s mass fluxes could be obtained based on the local partial pressures, solubility, diffusion, and the membrane’s selectivity. COMSOL Multiphysics was used to solve the numerical solution at corresponding operating conditions and results were compared to experimental data. The two different mixtures, CO2/CH4 and N2/O2, were investigated to obtain concentration gradient and mass flux profiles of CO2 and O2 species in an axial direction. This study allows assessing the feed pressure’s impact on the HFM system’s overall performance. These results demonstrate that the increment in feed pressures decreased the membrane system’s separation performance. The impact of hollow fiber length indicates that increasing the active fiber length has a higher effective mass transfer region but dilutes the permeate-side purities of O2 (46% to 28%) and CO2 (93% to 73%). The results show that increasing inlet pressure and a higher concentration gradient resulted in higher flux through the membrane.

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“…Generally, polymeric membranes have been widely employed for their desired properties, including lower energy consumption and smaller equipment footprint 20–23 . Polymeric membranes also reveal sufficient mechanical strength, flexibility, along with reproducibility and variant configurations 20,24…”

Section: Introductionmentioning

confidence: 99%

CO₂ separation of a novel Ultem‐based mixed matrix membrane incorporated with Ni²⁺‐exchanged zeolite X

et al. 2021

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In this study, polyetherimide (Ultem) was chosen as a polymeric matrix, and micron‐sized Ni2+‐exchanged nano‐porous NaX zeolite was selected as an inorganic filler to fabricate novel mixed matrix membranes (MMMs) for CO2 separation. Fabricated membranes were evaluated by Differential scanning calorimeter, Fourier transform infrared spectroscopy, X‐ray diffraction, scanning electron microscopy, and energy dispersive X‐ray. The influences of filler loading (0–5 wt.%) and feed pressure (2–10 bar) on gas separation properties were surveyed. CO2/N2 ideal selectivity of 3 wt.% NiX loaded MMM (optimum MMM) was increased to 34 (about 36%) compared to 25 for the pristine membrane. Furthermore, CO2 permeability was improved by about 45%, from 1.3 Barrer for the pure membrane to 1.88 Barrer for MMM containing 3 wt.% functionalized filler. These improvements originate from a combination of the inherent surface diffusion mechanism of zeolite X and reversible reaction between free orbitals of transition metal ions (Ni2+) and electron pairs of CO2 molecules. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Modeling and Simulation for Membrane Gas Separation Processes

Cited by 5 publications

References 75 publications

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

CO₂ separation of a novel Ultem‐based mixed matrix membrane incorporated with Ni²⁺‐exchanged zeolite X

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Modeling and Simulation for Membrane Gas Separation Processes

Cited by 5 publications

References 75 publications

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Computational Fluid Dynamics Analysis of a Hollow Fiber Membrane Module for Binary Gas Mixture

CO2 separation of a novel Ultem‐based mixed matrix membrane incorporated with Ni2+‐exchanged zeolite X

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Product

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CO₂ separation of a novel Ultem‐based mixed matrix membrane incorporated with Ni²⁺‐exchanged zeolite X