The effect of ZIF-90 particle in Pebax/Psf composite membrane on the transport properties of CO2, CH4 and N2 gases by Molecular Dynamics Simulation method

Hatami, Ali; Salahshoori, Iman; Rashidi, Niloufar; Nasirian, Danial

doi:10.1016/j.cjche.2019.12.011

Cited by 47 publications

(18 citation statements)

References 49 publications

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“…Rubbery polymeric membranes possess high permeability and low selectivity since their polymer chains are soft and can produce more fractional free volume (FFV) for gas molecules to pass. Rubbery polymers have a high free volume 78. In rubbery polymers, the loose polymer chain packing and the random movements of polymer chain segments allow gas molecules to diffuse through the polymer matrix more freely and causes the gas permeability to increase.…”

Section: Membrane Categorizationmentioning

confidence: 99%

A Review on Glassy and Rubbery Polymeric Membranes for Natural Gas Purification

Farnam¹,

Mukhtar

Shariff

2021

ChemBioEng Reviews

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A comprehensive overview of membrane technology used for natural gas purification and other gas separation applications including methods, materials, and results described in previous studies is presented. Different membrane categories are elaborated thoroughly followed by comparisons made between glassy and rubbery polymeric membranes. Various approaches to improve membrane separation performance, such as incorporation of inorganic fillers and blending technique, are discussed. Gas separation in different membranes, e.g., glassy/rubbery polymer blend membranes, mixed matrix membranes, and polymeric blend mixed matrix membranes, are considered. Adopted techniques by researchers to solve existing issues in membrane fabrication and performance are explained in detail.

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Section: Membrane Categorizationmentioning

confidence: 99%

A Review on Glassy and Rubbery Polymeric Membranes for Natural Gas Purification

Farnam¹,

Mukhtar

Shariff

2021

ChemBioEng Reviews

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“…It should be noted that the membrane with the crystalline state has higher intensity peaks, while with the increasing amorphous state, the intensity of X-diffraction pattern peaks decreases. The amorphous and crystalline state of the membrane significantly affects the degree of permeability and selectivity [3,57]. For example, Kim et al [58] Investigated the fabrication of a mixed matrix membrane by adding TiO 2 and fly ash nanoparticles (FA) to the polymer structure for water treatment.…”

Section: Morphological Analysismentioning

confidence: 99%

“…The MMMs consist of a basic phase (single or polymeric blend) and filler phases, including different nanoparticles [3]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in synthesis and applications of mixed matrix membranes

2021

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Researchers are currently considering membranes separation processes due to their eco-friendly, process simplicity and high efficiency. Selecting a suitable and efficient operation is the primary concern of researchers in the field of separation industries. In recent decades, polymeric and inorganic membranes in the separation industry have made significant progress. The polymeric and inorganic membranes have been challenged due to their competitiveness in permeability and selectivity factors. A combination of nanoparticle fillers within the polymer matrix is an effective method to increase polymeric and inorganic membranes’ efficiency in separation processes. Mixed matrix membranes (MMMs) have been considered by the separation industry due to high mechanical and physicochemical, and transfer properties. Moreover, gas separation, oil treatment, heavy metal ions removal, water treatment and oil-water separation are common MMMs applications. Selecting suitable polymer blends and fillers is the key to the MMMs construction. The combination of rubbery and glassy polymers with close solubility parameters increases the MMMs performance. The filler type and synthesis methods also affect the morphological and transfer properties of MMMs significantly. Zeolites, graphene oxide (GO), nanosilica, carbon nanotubes (CNTs), zeolite imidazole frameworks (ZIFs) and metal-organic frameworks (MOFs) are used in the MMMs synthesis as fillers. Finally, solution mixing, polymerization in situ and sol-gel are the primary synthesising MMMs methods.

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“…13a we see two factors extraction concentration (X 1 ) and surfactant concentration (X 2 ) with response rate, while factors X 4 , X 3 and X 5 are in the lower, middle and lower positions, respectively. By looking at this graph, we find that if factor X 1 is at its highest level (3.5-5) and factor (X 2 ) is at its highest level (3)(4)(5), the highest response rate for hafnium ion recovery would be achieved.…”

Section: Contour Plot Graphsmentioning

confidence: 99%

“…However, to date, membrane processes have found little industrial applications. The reasons for this can be due to its low separation rate and selectivity [2][3][4][5]. Nonetheless, to further improve the separation efficiency, a newer method has been developed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of experimental results and D-optimal design of hafnium ion extraction from aqueous system using emulsion liquid membrane technique

2020

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Hafnium metal is used in a wide range of industries such as microprocessor manufacturing, nuclear reactors and special alloys due to its physical, chemical and radiation properties. Emulsion liquid membrane (ELM) is an effective and efficient alternative for heavy metal separation compared to conventional methods due to high selectivity, energy-saving, high mass transfer and low operating capital. In this study, Cyanex 572 as a carrier, Span 85 as a surfactant, hydrochloric acid as an internal phase and kerosene as a diluent were used. In the first part of the study, the stability of the emulsions was investigated. The most stable emulsions were obtained by adding PIB polymer (3% w/v), Span 85 surfactant (3% w/v) and stirring for 15 min. In the second part, the separation of hafnium metal ions from aqueous solutions was investigated using ELM technique. The highest separation was obtained at 4% (v/v) as carrier concentration, 4% (w/v) as surfactant concentration, the membrane-to-feed volume ratio of 20/100 and W/O/W emulsion stirring rate and time equal to 400 rpm and 5 min, respectively. Moreover, to optimize the factors influencing the tests, the design of experiment (DOE) was performed using D-optimal method via Design Expert 10 software. Based on DOE results, the maximum extraction (> 99%) was achieved when the carrier concentration, the surfactant concentration, W/O/W emulsion stirring time, W/O/W emulsion stirring rate and emulsion volume/feed phase ratio were 4.49% v/v, 3.90% w/v, 11.49 min, 310.54 rpm and 2:1, respectively.

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The effect of ZIF-90 particle in Pebax/Psf composite membrane on the transport properties of CO2, CH4 and N2 gases by Molecular Dynamics Simulation method

Cited by 47 publications

References 49 publications

A Review on Glassy and Rubbery Polymeric Membranes for Natural Gas Purification

A Review on Glassy and Rubbery Polymeric Membranes for Natural Gas Purification

Recent advances in synthesis and applications of mixed matrix membranes

Investigation of experimental results and D-optimal design of hafnium ion extraction from aqueous system using emulsion liquid membrane technique

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