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Yousef S, Tonkonogovas A, Makarevicius V, Mohamed A. Enhanced gas separation performance for H 2 purification using MIL-68(ln)-nh 2/PES mixed-matrix membranes. CHEMOSPHERE 2024; 358:142166. [PMID: 38685331 DOI: 10.1016/j.chemosphere.2024.142166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/19/2024] [Accepted: 04/25/2024] [Indexed: 05/02/2024]
Abstract
The growing demand for sustainable and efficient gas separation technologies has prompted the exploration of advanced materials to enhance the gas permeability and selectivity. Polyethersulfone (PES) membranes are widely used in gas separation, gas upgrading, and clean energy production owing to their environmental friendliness and low cost. However, their gas permeability and selectivity can be further improved for commercial application. This study explored the incorporation of 10 wt % of MIL-68(ln)-NH2 into PES membranes using a phase-inversion approach to enhance gas permeability and selectivity. The morphological, structural, and thermal properties of the resulting MOF/PES membrane were characterized using SEM, AFM, BET, XRD, FTIR, and TGA-DTG. Gas permeation experiments were conducted using different gases (CO2, N2, CH4, and H2) under different heating conditions (20-60 °C) to evaluate the gas permeability and selectivity of the MOF/PES membrane. The results showed that the incorporation of MOF into the mixed matrix membrane (MMMs) led to a 9% increase in porosity, 87% reduction in roughness, and 32% decrease in pore size compared to neat PES membranes. Significant changes in the morphology, crystallinity, and thermal stability were observed, with notable improvements of up to 22%. Moreover, the MOF/PES membrane exhibited high gas permeability (CO2 = 124656, N2 = 83650, CH4 = 159298, and H2 = 427075 Barrer) and selectivity (H2/N2 = 5.7, H2/CO2 = 4, CH4/N2 = 2, and CH4/CO2 = 1.7) for flammable gases. The optimal gas separation performance was observed at 20 °C and 60 °C for H2/N2 and H2/CO2 separation, respectively. These findings demonstrate the potential of MOF-based PES membranes for gas separation applications, particularly in H2 purification.
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Affiliation(s)
- Samy Yousef
- Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, LT-51424 Kaunas, Lithuania
| | - Andrius Tonkonogovas
- Lithuanian Energy Institute, Laboratory of Heat Equipment Research and Testing, Breslaujos 3, LT 44403, Kaunas, Lithuania
| | - Vidas Makarevicius
- Laboratory of Materials Research and Testing, Lithuanian Energy Institute, Breslaujos st. 3, 44403 Kaunas, Lithuania
| | - Alaa Mohamed
- Section of Chemical Science and Engineering, Department of Chemistry and Bioscience, Aalborg University, Niels Bohrs Vej 8, 6700 Esbjerg, Denmark.
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Yousef S, Tonkonogovas A, Mohamed A. Graphene-modified MIL-125-NH 2 mixed matrix membranes for efficient H 2 and CH 4 purification. CHEMOSPHERE 2024; 352:141362. [PMID: 38309606 DOI: 10.1016/j.chemosphere.2024.141362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/05/2024]
Abstract
This study investigates the performance of the mixed matrix membranes (MMMs) incorporating hybrid fillers of metal-organic framework (MIL-125-NH2) and graphene nanosheets (GNs) for enhanced methane (CH₄) and hydrogen (H₂) separation in the purification sector. The physico-chemical properties of the MMMs were evaluated by SEM, XRD, FTIR, AFM, TGA, DTG, and Brunauer-Emmett-Teller. The permeability and selectivity of the MMMs were determined using different single gases (CO2, N2, H2, and CH4) at various temperatures (20-60 °C). Optimization of fabrication parameters resulted in a significant improvement in porosity and roughness of the fabricated MMMs. The permeabilities of the MOF/PES membrane are 20.3 (CO2), 23.9 (N2), 32.2 (CH4), and 24.1 (H2) x 104 Barrer, while incorporating 0.05 wt% of GNs into the MOF/PES membrane improved the permeability by 36 % (CO2), 41 % (N2), 31 % (CH4), and 370 % (H2). In addition, the H2/CO2 and H2/N2 selectivities of the MMMs significantly increased up to 4 and 3.3, with an improvements of 236 % and 230 %, respectively, compared to the MOF/PES membrane. Furthermore, the CH4/CO2 and CH4/N2 selectivities of the MMMs decreased by 4 %. Therefore, a hybrid filler (10 wt % of MIL-125-NH2 and 0.05 wt % of GNs is highly recommended to improve the permeability and selectivity of the PES membrane, expanding its potential applications in CH4 and H2 purification.
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Affiliation(s)
- Samy Yousef
- Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, LT-51424, Kaunas, Lithuania
| | - Andrius Tonkonogovas
- Lithuanian Energy Institute, Laboratory of Heat Equipment Research and Testing, Breslaujos 3, LT 44403, Kaunas, Lithuania
| | - Alaa Mohamed
- Section of Chemical Science and Engineering, Department of Chemistry and Bioscience, Aalborg University, Niels Bohrs Vej 8, 6700, Esbjerg, Denmark.
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Hu M, Gao W, Zhang L, Wang Y, Feng H. Transformation of Diffusion and Local Structure of CH 4 , CO 2 , SO 2 and H 2 O Mixtures in Graphene Under Wide Temperature and Pressure Range: A Molecular Dynamics Simulation Study. Chemphyschem 2024; 25:e202300851. [PMID: 38088520 DOI: 10.1002/cphc.202300851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/05/2023] [Indexed: 01/11/2024]
Abstract
As a material with high specific surface area and excellent chemical stability, graphene exhibited remarkable adsorption and separation performance as well as a wide range of potential applications. The graphene layer played a significant role in influencing gas transmission. In this study, we employed molecular dynamics simulation to investigate the diffusion characteristics and local structures of a mixed system consisting of CH4 , CO2 , SO2 and H2 O. Additionally, we further examined the transformation of the behavior of these mixtures within graphene layers. The order of diffusion coefficients of the four molecules without graphene was H2 O>SO2 >CO2 ≫CH4 . However, in the double-layer graphene, the order changed to CH4 >CO2 ≫H2 O>SO2 . Higher temperatures and lower pressures were found to facilitate gas diffusion. Temperature and pressure had great effects on the local structures of CH4 , CO2 and SO2 , while their impact on H2 O was limited due to the extensive network of hydrogen bonds formed by H2 O molecules. The statistical results of average coordination number revealed that CH4 tended to aggregate with itself, whereas CO2 and SO2 exhibited a tendency to aggregate with H2 O. The graphene structure enhanced the separation and transportation of CH4 from mixed systems.
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Affiliation(s)
- Minghui Hu
- Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal University, Haikou, 571158, China
| | - Wei Gao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Lisha Zhang
- Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal University, Haikou, 571158, China
| | - Yize Wang
- Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal University, Haikou, 571158, China
| | - Huajie Feng
- Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province Hainan Normal University, Haikou, 571158, China
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Kuzminova A, Dmitrenko M, Salomatin K, Vezo O, Kirichenko S, Egorov S, Bezrukova M, Karyakina A, Eremin A, Popova E, Penkova A, Selyutin A. Holmium-Containing Metal-Organic Frameworks as Modifiers for PEBA-Based Membranes. Polymers (Basel) 2023; 15:3834. [PMID: 37765688 PMCID: PMC10534401 DOI: 10.3390/polym15183834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/04/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Recently, there has been an active search for new modifiers to create hybrid polymeric materials for various applications, in particular, membrane technology. One of the topical modifiers is metal-organic frameworks (MOFs), which can significantly alter the characteristics of obtained mixed matrix membranes (MMMs). In this work, new holmium-based MOFs (Ho-MOFs) were synthesized for polyether block amide (PEBA) modification to develop novel MMMs with improved properties. The study of Ho-MOFs, polymers and membranes was carried out by methods of X-ray phase analysis, scanning electron and atomic force microscopies, Fourier transform infrared spectroscopy, low-temperature nitrogen adsorption, dynamic and kinematic viscosity, static and dynamic light scattering, gel permeation chromatography, thermogravimetric analysis and contact angle measurements. Synthesized Ho-MOFs had different X-ray structures, particle forms and sizes depending on the ligand used. To study the effect of Ho-MOF modifier on membrane transport properties, PEBA/Ho-MOFs membrane retention capacity was evaluated in vacuum fourth-stage filtration for dye removal (Congo Red, Fuchsin, Glycine thymol blue, Methylene blue, Eriochrome Black T). Modified membranes demonstrated improved flux and rejection coefficients for dyes containing amino groups: Congo Red, Fuchsin (PEBA/Ho-1,3,5-H3btc membrane possessed optimal properties: 81% and 68% rejection coefficients for Congo Red and Fuchsin filtration, respectively, and 0.7 L/(m2s) flux).
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Affiliation(s)
- Anna Kuzminova
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Mariia Dmitrenko
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Kirill Salomatin
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Olga Vezo
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Sergey Kirichenko
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Semyon Egorov
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Marina Bezrukova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 31 Bolshoy pr., St. Petersburg 199004, Russia; (M.B.); (A.E.); (E.P.)
| | - Anna Karyakina
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Alexey Eremin
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 31 Bolshoy pr., St. Petersburg 199004, Russia; (M.B.); (A.E.); (E.P.)
| | - Ekaterina Popova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 31 Bolshoy pr., St. Petersburg 199004, Russia; (M.B.); (A.E.); (E.P.)
- Faculty of Chemical and Biotechnology, Organic Chemistry Department, Saint-Petersburg State Institute of Technology (Technical University), 24-26/49 Letter A Moskovski Ave., St. Petersburg 190013, Russia
- Faculty of Industrial Drug Technologies, Department of Chemical Technology of Medicinal Substances, Saint-Petersburg State Chemical and Pharmaceutical University, 14 Prof. Popova Str., St. Petersburg 197022, Russia
| | - Anastasia Penkova
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
| | - Artem Selyutin
- Saint-Petersburg State University, 7/9 Universitetskaya Emb., St. Petersburg 199034, Russia; (A.K.); (M.D.); (K.S.); (O.V.); (S.K.); (S.E.); (A.K.); (A.P.)
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Zhou J, Jia B, Xu B, Sun J, Bai S. Amphipathic Solvent-Assisted Synthetic Strategy for Random Lamellae of the Clinoptilolites with Flower-like Morphology and Thinner Nanosheet for Adsorption and Separation of CO 2 and CH 4. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1942. [PMID: 37446458 DOI: 10.3390/nano13131942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 07/15/2023]
Abstract
The random lamellae of the synthetic CP were synthesized with a hydrothermal approach using o-Phenylenediamine (OPD) as a modifier. The decreases in the order degree of the CP synthesized in the presence of the OPD resulted from the loss of long-range order in a certain direction. Subsequently, the ultrasonic treatment and washing were conducive to further facilitate the disordered arrangements of its lamellae. The possible promotion mechanism regarding the nucleation and growth behaviors of the sol-gel particles was proposed. The fractal evolutions of the aluminosilicate species with crystallization time implied that the aluminosilicate species became gradually smooth to rough during the crystallization procedures since the amorphous structures transformed into flower-like morphologies. Their gas adsorption and separation performances indicated that the adsorption capacity of CO2 at 273 K reached up to 2.14 mmol·g-1 at 1 bar, and the selective factor (CO2/CH4) up to 3.4, much higher than that of the CPs synthesized without additive OPD. The breakthrough experiments displayed a longer breakthrough time and enhancement of CO2 uptake, showing better performance for CO2/CH4 separation. The cycling test further highlighted their efficiency for CO2/CH4 separation.
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Affiliation(s)
- Jiawei Zhou
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing 100021, China
| | - Bingying Jia
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing 100021, China
| | - Bang Xu
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing 100021, China
| | - Jihong Sun
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing 100021, China
| | - Shiyang Bai
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing 100021, China
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Singh S, Varghese AM, Reinalda D, Karanikolos GN. Graphene - based membranes for carbon dioxide separation. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101544] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pyrolysis Kinetic Behaviour of Glass Fibre-Reinforced Epoxy Resin Composites Using Linear and Nonlinear Isoconversional Methods. Polymers (Basel) 2021; 13:polym13101543. [PMID: 34064980 PMCID: PMC8151623 DOI: 10.3390/polym13101543] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/07/2021] [Accepted: 05/07/2021] [Indexed: 11/17/2022] Open
Abstract
Due to the increasing demand for glass fibre-reinforced epoxy resin composites (GFRC), huge amounts of GFRC waste are produced annually in different sizes and shapes, which may affect its thermal and chemical decomposition using pyrolysis technology. In this context, this research aims to study the effect of mechanical pre-treatment on the pyrolysis behaviour of GFRC and its pyrolysis kinetic. The experiments were started with the fabrication of GFRC panels using the vacuum-assisted resin transfer method followed by crushing the prepared panels using ball milling, thus preparing the milled GFRC with uniform shape and size. The elemental, proximate, and morphology properties of the panels and milled GFRC were studied. The thermal and chemical decomposition of the milled GFRC was studied using thermogravimetric coupled with Fourier-transform infrared spectroscopy (TG-FTIR) at different heating rates. Meanwhile, the volatile products were examined using TG coupled with gas chromatography-mass spectrometry (GC-MS). The TG-FTIR and TG-GC-MS experiments were performed separately. Linear (Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), and Friedman) and nonlinear (Vyazovkin and Cai) isoconversional methods were used to determine the pyrolysis kinetic of the milled GFRC based on thermogravimetry and differential thermal gravimetry (TG/DTG). In addition, the TG/DTG data of the milled GFRC were fitting using the distributed activation energy model and the independent parallel reactions kinetic model. The TG results showed that GFRC can decompose in three stages, and the main decomposition is located in the range 256-500 °C. On the other hand, aromatic benzene and a C-H bond were the major functional groups in the released volatile components in FTIR spectra, while phenol (27%), phenol,4-(1-methylethyl) (40%), and p-isopropenylphenol (34%) were the major compounds in GC-MS analysis. Whereas, the kinetic results showed that both isoconversional methods can be used to determine activation energies, which were estimated 165 KJ/mol (KAS), 193 KJ/mol (FWO), 180 KJ/mol (Friedman), 177 KJ/mol (Vyazovkin), and 174 KJ/mol (Cai).
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Yousef S, Eimontas J, Zakarauskas K, Striūgas N, Mohamed A. A new strategy for using lint-microfibers generated from clothes dryer as a sustainable source of renewable energy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 762:143107. [PMID: 33129549 DOI: 10.1016/j.scitotenv.2020.143107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 05/22/2023]
Abstract
Lint-microfibers (LMs) generated during clothes drying are classified as primary microplastics and consist mainly of cotton, polyester and lignin. This research aims to convert LMFs into energy products using a pyrolysis treatment. The pyrolysis experiments were performed using a pilot pyrolysis plant. SEM-EDS was used to observe the morphology and elemental composition of the feedstock and the obtained biochar, while a digital unit of Instantaneous Gas analyzer and Gas chromatography (GC) were used to observe the concentration of O2, N2, CO2, CO, H2, CH4 gases during the whole conversion process. Finally, a simple mathematical model was developed to evaluate the economic and environmental performance of the suggested strategy based on the LMFs generated by one million persons. Based on the results of the developed model and yield of pyrolysis process, around 45 tons of LMFs are generated by one million persons annually and this amount is enough to produce 13.8 tons of oil (~31%), 21.5 tons of gas (47.7%), and 9.7 ton of char (21.6%) with estimated profitability of 120,400$ and reduction in carbon footprint estimated at -42,039,000kg CO2-eq/t of LMFs.
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Affiliation(s)
- Samy Yousef
- Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, LT-51424 Kaunas, Lithuania; Department of Materials Science, South Ural State University, Lenin prospect 76, 454080 Chelyabinsk, Russia.
| | - Justas Eimontas
- Lithuanian Energy Institute, Laboratory of Combustion Processes, Breslaujos 3, LT-44403 Kaunas, Lithuania
| | - Kęstutis Zakarauskas
- Lithuanian Energy Institute, Laboratory of Combustion Processes, Breslaujos 3, LT-44403 Kaunas, Lithuania
| | - Nerijus Striūgas
- Lithuanian Energy Institute, Laboratory of Combustion Processes, Breslaujos 3, LT-44403 Kaunas, Lithuania
| | - Alaa Mohamed
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Preparation and Characterization of Polyphenylsulfone (PPSU) Membranes for Biogas Upgrading. MATERIALS 2020; 13:ma13122847. [PMID: 32630434 PMCID: PMC7345145 DOI: 10.3390/ma13122847] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 11/20/2022]
Abstract
Asymmetric polyphenylsulfone (PPSU) membranes were fabricated by a non-solvent induced phase inversion method. Glycerin and silica nanoparticles were added into the polymer solution to investigate their effects on the material properties and gas separation performance of prepared membranes. The morphology and structure of PPSU membranes were analyzed by scanning electron microscopy (SEM), the surface roughness of the selective layer was analyzed by atomic force microscopy (AFM), and the surface free energy was calculated based on the contact angle measurements by using various solvents. The gas separation performance of PPSU membranes was estimated by measuring the permeability of CO2 and CH4. The addition of glycerin as a nonsolvent into the polymer solution changed the cross-section structure from finger-like structure into sponge-like structure due to the delayed liquid-liquid demixing process, which was confirmed by SEM analysis. The incorporation of silica nanoparticles into PPSU membranes slightly increased the hydrophilicity, which was confirmed by water contact angle results. PPSU membrane fabricated from the polymer solution containing 10 wt.% glycerin showed the best CO2/CH4 selectivity of 3.86 and the CO2 permeability of 1044.01 Barrer. Mixed matrix PPSU membrane containing 0.1 wt.% silica nanoparticles showed the CO2/CH4 selectivity of 3.16 and the CO2 permeability of 1202.77 Barrer.
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