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Jiménez-Robles R, Moreno-Torralbo BM, Badia JD, Martínez-Soria V, Izquierdo M. Flat PVDF Membrane with Enhanced Hydrophobicity through Alkali Activation and Organofluorosilanisation for Dissolved Methane Recovery. MEMBRANES 2022; 12:membranes12040426. [PMID: 35448396 PMCID: PMC9027404 DOI: 10.3390/membranes12040426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/29/2022] [Accepted: 04/11/2022] [Indexed: 11/16/2022]
Abstract
A three-step surface modification consisting of activation with NaOH, functionalisation with a silica precursor and organofluorosilane mixture (FSiT), and curing was applied to a poly(vinylidene fluoride) (PVDF) membrane for the recovery of dissolved methane (D-CH4) from aqueous streams. Based on the results of a statistical experimental design, the main variables affecting the water contact angle (WCA) were the NaOH concentration and the FSiT ratio and concentration used. The maximum WCA of the modified PVDF (mPVDFmax) was >140° at a NaOH concentration of 5%, an FSiT ratio of 0.55 and an FSiT concentration of 7.2%. The presence of clusters and a lower surface porosity of mPVDF was detected by FESEM analysis. In long-term stability tests with deionised water at 21 L h−1, the WCA of the mPVDF decreased rapidly to around 105°, similar to that of pristine nmPVDF. In contrast, the WCA of the mPVDF was always higher than that of nmPVDF in long-term operation with an anaerobic effluent at 3.5 L h−1 and showed greater mechanical stability, since water breakthrough was detected only with the nmPVDF membrane. D-CH4 degassing tests showed that the increase in hydrophobicity induced by the modification procedure increased the D-CH4 removal efficiency but seemed to promote fouling.
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Affiliation(s)
- Ramón Jiménez-Robles
- Research Group in Environmental Engineering (GI2AM), Department of Chemical Engineering, School of Engineering, University of Valencia, Avda. Universitat s/n, 46100 Burjassot, Spain; (R.J.-R.); (V.M.-S.)
| | - Beatriz María Moreno-Torralbo
- Research Group in Materials Technology and Sustainability (MATS), Department of Chemical Engineering, School of Engineering, University of Valencia, Avda. Universitat s/n, 46100 Burjassot, Spain; (B.M.M.-T.); (J.D.B.)
| | - Jose David Badia
- Research Group in Materials Technology and Sustainability (MATS), Department of Chemical Engineering, School of Engineering, University of Valencia, Avda. Universitat s/n, 46100 Burjassot, Spain; (B.M.M.-T.); (J.D.B.)
| | - Vicente Martínez-Soria
- Research Group in Environmental Engineering (GI2AM), Department of Chemical Engineering, School of Engineering, University of Valencia, Avda. Universitat s/n, 46100 Burjassot, Spain; (R.J.-R.); (V.M.-S.)
| | - Marta Izquierdo
- Research Group in Environmental Engineering (GI2AM), Department of Chemical Engineering, School of Engineering, University of Valencia, Avda. Universitat s/n, 46100 Burjassot, Spain; (R.J.-R.); (V.M.-S.)
- Correspondence: ; Tel.: +34-963-543-737; Fax: +34-963-544-898
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Shiva Prasad N, Babarao R, Madapusi S, Sridhar S, Choudhury NR, Bhargava SK. Residual solvent induced physical morphology and gas permeation in polyamide-imide membrane: Experimental investigation and molecular simulations. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Polybenzimidazole Membrane Crosslinked with Epoxy-Containing Inorganic Networks for Organic Solvent Nanofiltration and Aqueous Nanofiltration under Extreme Basic Conditions. MEMBRANES 2022; 12:membranes12020140. [PMID: 35207063 PMCID: PMC8877178 DOI: 10.3390/membranes12020140] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 02/04/2023]
Abstract
In this study, a novel polybenzimidazole (PBI)-based organic solvent nanofiltration (OSN) membrane possessing excellent stability under high pH condition was developed. To improve the chemical stability, the pristine PBI membrane was crosslinked with a silane precursor containing an epoxy end group. In detail, hydrolysis and condensation reaction of methoxysilane in the 3-glycidyloxypropyl trimethoxysilane (GPTMS) yields organic–inorganic networks within the PBI membrane structure. At the same time, the epoxy end groups on the organosiloxane network (Si–O–Si) reacted with amine groups of PBI to complete the crosslinking. The resulting crosslinked PBI membrane exhibited a good stability upon exposure to organic solvents and was not decomposed even in basic solution (pH 13). Our membrane showed an ethanol permeance of 27.74 LMHbar−1 together with a high eosin Y rejection of >90% under 10 bar operation pressure at room temperature. Furthermore, our PBI membrane was found to be operational even under an extremely basic condition, although the effective pore size was slightly enlarged due to the pore swelling effect. The results suggest that our membrane is a promising candidate for OSN application under basic conditions.
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New Membrane-Forming Aromatic Co-Poly(amide-imide)s: Influence of the Chemical Structure on the Morphological, Thermal and Transport Properties. MEMBRANES 2022; 12:membranes12010091. [PMID: 35054617 PMCID: PMC8781751 DOI: 10.3390/membranes12010091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 11/17/2022]
Abstract
Polymer film membranes are used to solve specific separation problems that dictate structural requirements. Structural and morphological parameters of film membranes based on glassy polyheteroarylenes can be controlled in the process of preparation from solutions that opens up prospects for obtaining structured membranes required for targeted separation. In the case of aromatic poly(amide-imide)s, the possibility of controlling film formation and structure virtually has not been studied. In the present work, a series of homologous co-poly(amide-imide)s differing in the number of repeating units with carboxyl-substituted aromatic fragments was synthesized by polycondensation. Comparative analysis of the processes of formation of membranes with different morphologies based on these polymers under equal conditions was performed. New information was obtained about the influence of the amounts of carboxyl groups and the residual solvent on structural properties of asymmetric membranes. The influence of these factors on transport properties of dense membranes under pervaporation conditions was studied. It was demonstrated that in the case of carboxyl-containing poly(amide-imide)s, the domains formed during film preparation had a significant effect on membrane properties.
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Abdul Wahab MS, Ghazali AA, Abd Ghapar NF, Abd Rahman S, Abu Samah R. Thin film nanocomposite (Tfnc) membranes: Future direction of Tfnc synthesis for alcohol dehydration. SURFACES AND INTERFACES 2021; 25:101165. [DOI: 10.1016/j.surfin.2021.101165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Helali N, Shamaei L, Rastgar M, Sadrzadeh M. Development of layer-by-layer assembled polyamide-imide membranes for oil sands produced water treatment. Sci Rep 2021; 11:8098. [PMID: 33854144 PMCID: PMC8046792 DOI: 10.1038/s41598-021-87601-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 03/30/2021] [Indexed: 11/18/2022] Open
Abstract
The sustainable expansion of steam-assisted gravity drainage, as one of the most popular enhanced oil recovery methods, strongly depends on the proper management of the produced water. The strict environmental regulations have forced the oil sands industry to treat and reuse the produced water for oil extraction. Membrane separation as a single-step water treatment technique has played an important role in removing multiple-sized contaminants from wastewater. However, fouling limits the widespread application of this technology if the membrane is not modified properly to achieve antifouling propensities. Herein, we used the layer-by-layer assembly technique to sequentially coat the hydrophilic poly(diallyl dimethylammonium chloride) and polyacrylic acid on the surface of the polyamide-imide porous membrane to improve its fouling resistance. The effect of the number of bilayers on fouling and permeation properties was examined. The membrane with the highest fouling resistance and reasonable hydrodynamic permeability of 5.2 LMH/psi was achieved by coating four bilayers. This membrane exhibited a low flux decline of 50.2% and a high flux recovery ratio of 100%, while these numbers for the pristine PAI membrane were 75.9% and 97.8% under similar test conditions. The enhanced antifouling characteristics of the modified membranes indicate the viability of these membranes for oil sands produced water treatment with an easy cleaning procedure. The key parameter that contributed to the enhanced fouling resistance of the bilayer-coated membranes was the improved surface hydrophilicity, which manifests through the reduction of water contact angle from 62° ± 3° for the pristine membrane to 52° ± 2° for surface-modified membranes.
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Affiliation(s)
- Nusrat Helali
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB, T6G 1H9, Canada
| | - Laleh Shamaei
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB, T6G 1H9, Canada
| | - Masoud Rastgar
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB, T6G 1H9, Canada
| | - Mohtada Sadrzadeh
- Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB, T6G 1H9, Canada.
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Membrane Contactors for Maximizing Biomethane Recovery in Anaerobic Wastewater Treatments: Recent Efforts and Future Prospect. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11041372] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Increasing demand for water and energy has emphasized the significance of energy-efficient anaerobic wastewater treatment; however, anaerobic effluents still containing a large portion of the total CH4 production are discharged to the environment without being utilized as a valuable energy source. Recently, gas–liquid membrane contactors have been considered as a promising technology to recover such dissolved methane from the effluent due to their attractive characteristics such as high specific mass transfer area, no flooding at high flow rates, and low energy requirement. Nevertheless, the development and further application of membrane contactors were still not fulfilled due to their inherent issues such as membrane wetting and fouling, which lower the CH4 recovery efficiency and thus net energy production. In this perspective, the topics in membrane contactors for dissolved CH4 recovery are discussed in the following order: (1) operational principle, (2) potential as waste-to-energy conversion system, and (3) technical challenges and recent efforts to address them. Then, future efforts that should be devoted to advancing gas–liquid membrane contactors are suggested as concluding remarks.
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Xu Y, Goh K, Wang R, Bae TH. A review on polymer-based membranes for gas-liquid membrane contacting processes: Current challenges and future direction. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115791] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Amirabedi P, Akbari A, Yegani R. Fabrication of hydrophobic PP/CH3SiO2 composite hollow fiber membrane for membrane contactor application. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115689] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Xu Y, Lin Y, Lee M, Malde C, Wang R. Development of low mass-transfer-resistance fluorinated TiO 2 -SiO 2 /PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.02.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Integral hollow fiber membrane with chemical cross-linking for pressure retarded osmosis operated in the orientation of active layer facing feed solution. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Eykens L, De Sitter K, Stoops L, Dotremont C, Pinoy L, Van der Bruggen B. Development of polyethersulfone phase-inversion membranes for membrane distillation using oleophobic coatings. J Appl Polym Sci 2017. [DOI: 10.1002/app.45516] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L. Eykens
- VITO-Flemish Institute for Technological Research; Mol 2400 Belgium
- Department of Chemical Engineering; KU Leuven; Leuven B-3001 Belgium
| | - K. De Sitter
- VITO-Flemish Institute for Technological Research; Mol 2400 Belgium
| | - L. Stoops
- VITO-Flemish Institute for Technological Research; Mol 2400 Belgium
| | - C. Dotremont
- VITO-Flemish Institute for Technological Research; Mol 2400 Belgium
| | - L. Pinoy
- Department of Chemical Engineering; Cluster Sustainable Chemical Process Technology, KU Leuven; Ghent B-9000 Belgium
| | - B. Van der Bruggen
- Department of Chemical Engineering; KU Leuven; Leuven B-3001 Belgium
- Faculty of Engineering and the Built Environment; Tshwane University of Technology; Pretoria 0001 South Africa
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Gholamzadeh N, Peyravi M, Jahanshahi M, Hoseinpour H, Rad AS. Developing PES membrane by modified Co3O4-OA nanoparticles for direct contact membrane distillation process. ASIA-PAC J CHEM ENG 2017. [DOI: 10.1002/apj.2100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nika Gholamzadeh
- School of Chemical Engineering; Kavosh Institute of Higher Education; Mahmood abad Iran
| | - Majid Peyravi
- Nanotechnology Research Institute, School of Chemical Engineering; Babol Noshirvani University of Technology; Babol Iran
| | - Mohsen Jahanshahi
- Nanotechnology Research Institute, School of Chemical Engineering; Babol Noshirvani University of Technology; Babol Iran
- School of Chemical Engineering; Kavosh Institute of Higher Education; Mahmood abad Iran
| | - Hamzeh Hoseinpour
- Nuclear Science and Technology Research Institute (NSTRI); Tehran Iran
| | - Ali Shokuhi Rad
- Department of chemical Engineering, Qaemshahr Branch; Islamic Azad University; Qaemshahr Iran
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Hydrophobicity optimization of polypropylene hollow fiber membrane by sol–gel process for CO2 absorption in gas–liquid membrane contactor using response surface methodology. IRANIAN POLYMER JOURNAL 2017. [DOI: 10.1007/s13726-017-0532-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Servi AT, Guillen-Burrieza E, Warsinger DM, Livernois W, Notarangelo K, Kharraz J, Lienhard V JH, Arafat HA, Gleason KK. The effects of iCVD film thickness and conformality on the permeability and wetting of MD membranes. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.10.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Abdolvahabi A, Shi Y, Rasouli S, Croom CM, Chuprin A, Shaw BF. How Do Gyrating Beads Accelerate Amyloid Fibrillization? Biophys J 2017; 112:250-264. [PMID: 28122213 PMCID: PMC5266089 DOI: 10.1016/j.bpj.2016.12.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/22/2016] [Accepted: 12/05/2016] [Indexed: 01/21/2023] Open
Abstract
The chemical and physical mechanisms by which gyrating beads accelerate amyloid fibrillization in microtiter plate assays are unclear. Identifying these mechanisms will help optimize high-throughput screening assays for molecules and mutations that modulate aggregation and might explain why different research groups report different rates of aggregation for identical proteins. This article investigates how the rate of superoxide dismutase-1 (SOD1) fibrillization is affected by 12 different beads with a wide range of hydrophobicity, mass, stiffness, and topology but identical diameter. All assays were performed on D90A apo-SOD1, which is a stable and wild-type-like variant of SOD1. The most significant and uniform correlation between any material property of each bead and that bead's effect on SOD1 fibrillization rate was with regard to bead mass. A linear correlation existed between bead mass and rate of fibril elongation (R2 = 0.7): heavier beads produced faster rates and shorter fibrils. Nucleation rates (lag time) also correlated with bead mass, but only for non-polymeric beads (i.e., glass, ceramic, metallic). The effect of bead mass on fibrillization correlated (R2 = 0.96) with variations in buoyant forces and contact forces (between bead and microplate well), and was not an artifact of residual momentum during intermittent gyration. Hydrophobic effects were observed, but only for polymeric beads: lag times correlated negatively with contact angle of water and degree of protein adhesion (surface adhesion and hydrophobic effects were negligible for non-polymeric beads). These results demonstrate that contact forces (alone) explain kinetic variation among non-polymeric beads, whereas surface hydrophobicity and contact forces explain kinetic variation among polymeric beads. This study also establishes conditions for high-throughput amyloid assays of SOD1 that enable the control over fibril morphologies and produce eightfold faster lag times and fourfold less stochasticity than in previous studies.
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Affiliation(s)
| | - Yunhua Shi
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas
| | - Sanaz Rasouli
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas; Institute of Biomedical Studies, Baylor University, Waco, Texas
| | - Corbin M Croom
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas
| | - Aleksandra Chuprin
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas
| | - Bryan F Shaw
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas.
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18
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Polyamide-imide hollow fiber membranes crosslinked with amine-appended inorganic networks for application in solvent-resistant nanofiltration under low operating pressure. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2015.11.016] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Xu WT, Zhao ZP, Liu M, Chen KC. Morphological and hydrophobic modifications of PVDF flat membrane with silane coupling agent grafting via plasma flow for VMD of ethanol–water mixture. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2015.05.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Yao L, Zhang L, Zhang Y, Wang R, Wongchitphimon S, Dong Z. Self-assembly of rare-earth Anderson polyoxometalates on the surface of imide polymeric hollow fiber membranes potentially for organic pollutant degradation. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.05.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Fane AG, Wang R, Hu MX. Synthetische Membranen für die Wasseraufbereitung: aktueller Stand und Perspektiven. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409783] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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22
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Fane AG, Wang R, Hu MX. Synthetic Membranes for Water Purification: Status and Future. Angew Chem Int Ed Engl 2015; 54:3368-86. [DOI: 10.1002/anie.201409783] [Citation(s) in RCA: 465] [Impact Index Per Article: 51.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Indexed: 11/08/2022]
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23
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Hashemifard SA, Ismail AF, Matsuura T, DashtArzhandi MR. Performance of silicon rubber coated polyetherimide hollow fibers for CO2 removal via a membrane contactor. RSC Adv 2015. [DOI: 10.1039/c5ra00085h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study focuses on the effect of a silicon rubber coating technique on the hollow fiber membrane contactor for the purpose of CO2 removal.
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Affiliation(s)
- S. A. Hashemifard
- Chemical Engineering Department
- Engineering Faculty
- Persian Gulf University
- Bushehr 7516913817
- Iran
| | - A. F. Ismail
- Advanced Membrane Technology Research Centre (AMTEC)
- Universiti Teknologi Malaysia
- 81310 UTM Skudai
- Malaysia
| | - T. Matsuura
- Advanced Membrane Technology Research Centre (AMTEC)
- Universiti Teknologi Malaysia
- 81310 UTM Skudai
- Malaysia
- Department of Chemical and Biological Engineering
| | - M. Rezaei DashtArzhandi
- Advanced Membrane Technology Research Centre (AMTEC)
- Universiti Teknologi Malaysia
- 81310 UTM Skudai
- Malaysia
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Zhang Y, Wang R. Novel method for incorporating hydrophobic silica nanoparticles on polyetherimide hollow fiber membranes for CO2 absorption in a gas–liquid membrane contactor. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2013.10.011] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Zhang Y, Wang R. Fabrication of novel polyetherimide-fluorinated silica organic–inorganic composite hollow fiber membranes intended for membrane contactor application. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.04.062] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Agrawal S, Narula AK. Synthesis and characterization of phosphorus containing aromatic poly(amide-imide)s copolymers for high temperature applications. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1021-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Li FS, Qiu W, Lively RP, Lee JS, Rownaghi AA, Koros WJ. Polyethyleneimine-functionalized polyamide imide (Torlon) hollow-fiber sorbents for post-combustion CO2 capture. CHEMSUSCHEM 2013; 6:1216-1223. [PMID: 23712965 DOI: 10.1002/cssc.201300172] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Indexed: 06/02/2023]
Abstract
Carbon dioxide emitted from existing coal-fired power plants is a major environmental concern due to possible links to global climate change. In this study, we expand upon previous work focused on aminosilane-functionalized polymeric hollow-fiber sorbents by introducing a new class of polyethyleneimine (PEI)-functionalized polymeric hollow-fiber sorbents for post-combustion carbon dioxide capture. Different molecular weight PEIs (M(n) ≈600, 1800, 10,000, and 60,000) were studied as functional groups on polyamide imide (PAI, Torlon) hollow fibers. This imide ring-opening modification introduces two amide functional groups and was confirmed by FTIR attenuated total reflectance spectroscopy. The carbon dioxide equilibrium sorption capacities of PEI-functionalized Torlon materials were characterized by using both pressure decay and gravimetric sorption methods. For equivalent PEI concentrations, PAI functionalized with lower molecular weight PEI exhibited higher carbon dioxide capacities. The effect of water in the ring-opening reaction was also studied. Up to a critical value, water in the reaction mixture enhanced the degree of functionalization of PEI to Torlon and resulted in higher carbon dioxide uptake within the functionalized material. Above the critical value, roughly 15% w/w water, the fiber morphology was lost and the fiber was soluble in the solvent. PEI-functionalized (Mn ≈600) PAI under optimal reaction conditions was observed to have the highest CO2 uptake: 4.9 g CO2 per 100 g of polymer (1.1 mmol g(-1)) at 0.1 bar and 35 °C with dry 10% CO2/90% N2 feed for thermogravimetric analysis. By using water-saturated feeds (10% CO2 /90% N2 dry basis), CO2 sorption was observed to increase to 6.0 g CO2 per 100 g of sorbent (1.4 mmol g(-1)). This material also demonstrated stability in cyclic adsorption-desorption operations, even under wet conditions at which some highly effective sorbents tend to lose performance. Thus, PEI-functionalized PAI fibers can be considered as promising material for post-combustion CO2 capture.
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Affiliation(s)
- Fuyue Stephanie Li
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0100, USA
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28
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Gas–liquid membrane contactors for acid gas removal: recent advances and future challenges. Curr Opin Chem Eng 2013. [DOI: 10.1016/j.coche.2013.03.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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29
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Sairiam S, Loh CH, Wang R, Jiraratananon R. Surface modification of PVDF hollow fiber membrane to enhance hydrophobicity using organosilanes. J Appl Polym Sci 2013. [DOI: 10.1002/app.39197] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Zhang Y, Wang R, Zhang L, Fane AG. Novel single-step hydrophobic modification of polymeric hollow fiber membranes containing imide groups: Its potential for membrane contactor application. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.09.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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