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Ma L, Hou M, Wang Y, Tong W, Zheng J. Organosiloxane membranes for heavy aromatic oil fractionation. Chem Commun (Camb) 2024. [PMID: 38990518 DOI: 10.1039/d4cc02669a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The industrial separation of hydrocarbons relies on distillation. Organic solvent nanofiltration can provide an energy-efficient alternative. We prepared high performance organosiloxane membranes for fractionation of heavy aromatics. They achieved a high permeance up to 0.13 L m-2 h-1 bar-1, with a rejection rate of 88.7% for hydrocarbons with five aromatic rings.
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Affiliation(s)
- Liang Ma
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co.,Ltd, Shanghai 201208, China.
| | - Min Hou
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co.,Ltd, Shanghai 201208, China.
| | - Yuemei Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co.,Ltd, Shanghai 201208, China.
| | - Weiyi Tong
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co.,Ltd, Shanghai 201208, China.
| | - Junlin Zheng
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, SINOPEC Shanghai Research Institute of Petrochemical Technology Co.,Ltd, Shanghai 201208, China.
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Fan H, He J, Heiranian M, Pan W, Li Y, Elimelech M. The physical basis for solvent flow in organic solvent nanofiltration. SCIENCE ADVANCES 2024; 10:eado4332. [PMID: 38875330 PMCID: PMC11177934 DOI: 10.1126/sciadv.ado4332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 05/10/2024] [Indexed: 06/16/2024]
Abstract
Organic solvent nanofiltration (OSN) is an emerging membrane technology that could revolutionize chemical separations in numerous vital industries. Despite its significance, there remains a lack of fundamental understanding of solvent transport mechanisms in OSN membranes. Here, we use an extended Flory-Rehner theory, nonequilibrium molecular dynamic simulations, and organic solvent transport experiments to demonstrate that solvent flow in OSN membranes is driven by a pressure gradient. We show that solvent molecules migrate as clusters through interconnected pathways within the membrane pore structure, challenging the widely accepted diffusion-based view of solvent transport in OSN. We further reveal that solvent permeance is dependent on solvent affinity to the OSN membrane, which, in turn, controls the membrane pore structure. Our fundamental insights lay the scientific groundwork for the development of next-generation OSN membranes.
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Affiliation(s)
- Hanqing Fan
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA
| | - Jinlong He
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706-1572, USA
| | - Mohammad Heiranian
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27606, USA
| | - Weiyi Pan
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA
| | - Ying Li
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706-1572, USA
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA
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Chun Y, Kim EH, Lee CS, Chang H, Kang CS. Sustainable and Elastic Carbon Aerogel by Polydimethylsiloxane Coating for Organic Solvent Absorption and Potential Application for Sensors (Infections, Environmental, Wearable Sensors, etc.). MATERIALS (BASEL, SWITZERLAND) 2023; 16:4560. [PMID: 37444874 DOI: 10.3390/ma16134560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/20/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023]
Abstract
Carbon aerogel is a promising material in various applications, such as water treatment, insulators, catalysts, and sensors, due to its porosity, low density, conductivity, and good chemical stability. In this study, an inexpensive carbon aerogel was prepared through lyophilization and post-pyrolysis using waste paper. However, carbon aerogel, in the form of short belts, is randomly entangled without a crosslinking agent and has weak mechanical properties, thus limiting its applications, which would otherwise be various. In this paper, a novel strategy is proposed to fabricate a PDMS-coated carbon aerogel (Aerogel@PDMS). Benefiting from microwave heating, precise PDMS coating onto the carbon frame was able to be carried out in a short amount of time. PDMS coating firmly tied the carbon microstructure, maintaining a unique aerogel property without blocking its porous structure. FE-SEM, RAMAN, XPS, and FT-IR were all used to confirm the surface change in PDMS coating. Compressible stability and water contact angle measurement showed that Aerogel@PDMS is a perspective organic solvent absorbent due to its good resilience and its hydrophobicity, and, as a result, its organic solvent absorption capacity and repeated absorption were evaluated, ultimately suggesting a promising material in oil clean-up and pollution remediation in water. Based on our experimental results, we identified elastic carbon aerogels provided by a novel coating technology. In the future, then, the developed carbon/PDMS composite can be examined as a promising option for various applications, such as environmental sensors, virus sensors, and wearable sensors.
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Affiliation(s)
- Youngsang Chun
- Department of Advanced Materials Engineering, Shinhan University, 95, Hoam-ro, Uijeongbu-si 11644, Republic of Korea
| | - Eui-Hwa Kim
- Department of Advanced Materials Engineering, Shinhan University, 95, Hoam-ro, Uijeongbu-si 11644, Republic of Korea
| | - Chae-Seok Lee
- KAIST Institute for Information Technology Convergence Integrated Sensor Team, KAIST, Daejeon 34141, Republic of Korea
| | - Hojong Chang
- KAIST Institute for Information Technology Convergence Integrated Sensor Team, KAIST, Daejeon 34141, Republic of Korea
| | - Chan-Sol Kang
- Department of Advanced Materials Engineering, Shinhan University, 95, Hoam-ro, Uijeongbu-si 11644, Republic of Korea
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Solvent-resistant porous membranes using poly(ether—ether ketone): preparation and application. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2221-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Pang S, Si Z, Li G, Wu H, Cui Y, Zhang C, Ren C, Yang S, Pang S, Qin P. A fluorinated, defect-free ZIF-8/PDMS mixed matrix membrane for enhancing ethanol pervaporation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Antimicrobial incorporation on 3D-printed polymers used as potential dental materials and biomaterials: a systematic review of the state of the art. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04427-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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He QP, Wang YY, Wang PF, Dou XM. Preparation of modified MFI-type/PDMS composite membranes for the separation of dichlorobenzene isomers via pervaporation. RSC Adv 2022; 12:16131-16140. [PMID: 35733675 PMCID: PMC9150433 DOI: 10.1039/d2ra01950g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
Zeolite-polymer composite membranes have become promising and effective materials for the pervaporative separation of liquids, especially for isomeric mixtures. In this paper, silicalite-1/PDMS composite membranes have been used to investigate the separation of dichlorobenzene (DCB) isomers via pervaporation for the first time. Silicalite-1 zeolites modified by the silane coupling agent, NH3-C3H6-Si(OC2H5)3, have been incorporated into polydimethylsiloxane (PDMS). Then, the silicalite-1/PDMS composite membranes have been successfully prepared on porous polyvinylidene fluoride (PVDF) supports. The morphology and structure of the silicalite-1 zeolites and silicalite-1/PDMS composite membranes have been characterized by XRD, FTIR, SEM and BET techniques. The results show that the modified silicalite-1 zeolite particles have smaller pore sizes dispersed more uniformly in the active layers of the silicalite-1/PDMS composite membranes and present fewer aggregation and pinholes formed by the accumulation of zeolite particles. The silicalite-1/PDMS composite membranes are all dense and continuous with good homogeneity. To evaluate the pervaporative separation performance of the DCB isomers, the unmodified and modified silicalite-1/PDMS composite membranes have been further tested in single-isomer and binary-isomer systems at 60 °C. The modified silicalite-1/PDMS composite membranes present higher DCB isomer separation factors. The separation factors of the modified silicalite-1/PDMS composite membranes in the binary-isomer systems for p-/o-DCB and p-/m-DCB are 3.53 and 5.63, respectively. The permeate flux of p-DCB through the modified silicalite-1/PDMS composite membranes in the p-/o-DCB binary-isomer system is 116.7 g m-2 h-1 and in the p-/m-DCB binary-isomer system, it is 93.5 g m-2 h-1. The result provides a new approach towards the pervaporative separation of DCB isomers from their mixture for future industrialization applications.
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Affiliation(s)
- Qiu-Ping He
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology Shanghai 200062 China
- Shanghai Luqiang New Materials Co., Ltd Shanghai 200062 China +86-21-69577696
| | - Ying-Ying Wang
- Shanghai Luqiang New Materials Co., Ltd Shanghai 200062 China +86-21-69577696
- State Key Laboratory of Polyolefin Catalytic Technology and High Performance Material, Shanghai Research Institute of Chemical Industry Co., Ltd Shanghai 200062 China
| | - Peng-Fei Wang
- Shanghai Luqiang New Materials Co., Ltd Shanghai 200062 China +86-21-69577696
- State Key Laboratory of Polyolefin Catalytic Technology and High Performance Material, Shanghai Research Institute of Chemical Industry Co., Ltd Shanghai 200062 China
| | - Xiao-Ming Dou
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology Shanghai 200062 China
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Lau HS, Lau SK, Soh LS, Hong SU, Gok XY, Yi S, Yong WF. State-of-the-Art Organic- and Inorganic-Based Hollow Fiber Membranes in Liquid and Gas Applications: Looking Back and Beyond. MEMBRANES 2022; 12:539. [PMID: 35629866 PMCID: PMC9144028 DOI: 10.3390/membranes12050539] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022]
Abstract
The aggravation of environmental problems such as water scarcity and air pollution has called upon the need for a sustainable solution globally. Membrane technology, owing to its simplicity, sustainability, and cost-effectiveness, has emerged as one of the favorable technologies for water and air purification. Among all of the membrane configurations, hollow fiber membranes hold promise due to their outstanding packing density and ease of module assembly. Herein, this review systematically outlines the fundamentals of hollow fiber membranes, which comprise the structural analyses and phase inversion mechanism. Furthermore, illustrations of the latest advances in the fabrication of organic, inorganic, and composite hollow fiber membranes are presented. Key findings on the utilization of hollow fiber membranes in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), pervaporation, gas and vapor separation, membrane distillation, and membrane contactor are also reported. Moreover, the applications in nuclear waste treatment and biomedical fields such as hemodialysis and drug delivery are emphasized. Subsequently, the emerging R&D areas, precisely on green fabrication and modification techniques as well as sustainable materials for hollow fiber membranes, are highlighted. Last but not least, this review offers invigorating perspectives on the future directions for the design of next-generation hollow fiber membranes for various applications. As such, the comprehensive and critical insights gained in this review are anticipated to provide a new research doorway to stimulate the future development and optimization of hollow fiber membranes.
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Affiliation(s)
- Hui Shen Lau
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Siew Kei Lau
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Leong Sing Soh
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Seang Uyin Hong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Xie Yuen Gok
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Shouliang Yi
- U.S. Department of Energy, National Energy Technology Laboratory, 626 Cochrans Mill Rd, Pittsburgh, PA 15236, USA;
| | - Wai Fen Yong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Novel organic solvent nanofiltration membrane based on inkjet printing-assisted layer-by-layer assembly. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120582] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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