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Xu Z, Xu L, Wang Y, Li Q, Cui S, Nie Z, Wei Q. Growing nearly vertically aligned ZnO nanorod arrays on porous α-Al2O3 membranes to enhance the separation of MTBE from aqueous solution. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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2
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Fang LJ, Chen JH, Yang Q, Lin WW, Lin QJ, He YS, Zhuo YZ. S-ZIF-8/PEBA/ZIF-8 pervaporation membrane with in situ growing of ZIF-8 active layer on the surface owing outstanding phenol enrichment performance. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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A Methyl-Modified Silica Layer Supported on Porous Ceramic Membranes for the Enhanced Separation of Methyl Tert-Butyl Ether from Aqueous Solution. MEMBRANES 2022; 12:membranes12050452. [PMID: 35629778 PMCID: PMC9144733 DOI: 10.3390/membranes12050452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/15/2022] [Accepted: 04/21/2022] [Indexed: 12/04/2022]
Abstract
As a kind of volatile organic compound (VOC), methyl tert-butyl ether (MTBE) is hazardous to human health and destructive to the environment if not handled properly. MTBE should be removed before the release of wastewater. The present work supported the methyl-modified silica layer (MSL) on porous α-Al2O3 ceramic membranes with methyltrimethoxysilane (MTMS) as a precursor and pre-synthesized mesoporous silica microspheres as dopants by the sol-gel reaction and dip-coating method. MTMS is an environmentally friendly agent compared to fluorinated alkylsilane. The MSL-supported Al2O3 ceramic membranes were used for MTBE/water separation by pervaporation. The NMR spectra revealed that MTMS evolves gradually from an oligomer to a highly cross-linked methyl-modified silica species. Methyl-modified silica species and pre-synthesized mesoporous silica microspheres combine into hydrophobic mesoporous MSL. MSL makes the α-Al2O3 ceramic membranes transfer from amphiphilic to hydrophobic and oleophilic. The MSL-supported α-Al2O3 ceramic membranes (MSL-10) exhibit an MTBE/water separation factor of 27.1 and a total flux of 0.448 kg m−2 h−1, which are considerably higher than those of previously reported membranes that are modified by other alkylsilanes via the post-grafting method. The mesopores within the MSL provide a pathway for the transport of MTBE molecules across the membranes. The presence of methyl groups on the external and inner surface is responsible for the favorable separation performance and the outstanding long-term stability of the MSL-supported porous α-Al2O3 ceramic membranes.
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Liu L, Li Y, Xu M, Wang C. 2D Co-UMOFNs filled PEBA composite membranes for pervaporation of phenol solution. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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5
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Araki S, Nishikawa Y, Nakata M, Li K, Yamamoto H. Synthesis of hydrophobic silica membranes derived from propyl trimethoxy silane and bis(triethoxysilyl)ethane for separation of volatile organic compounds from aqueous solutions. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hirota Y, Hayami S, Sasaki F, Matoba S, Yokoi K, Nishiyama N. Effects of the Si–O–Si Network Structure on the Permeation Properties of Silylated Ionic Liquid-Derived Membranes. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2022. [DOI: 10.1252/jcej.21we062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuichiro Hirota
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology
| | - Shohei Hayami
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University
| | - Fumiya Sasaki
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University
| | - Shotaro Matoba
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University
| | - Kazuki Yokoi
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology
| | - Norikazu Nishiyama
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University
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Goh KS, Chen Y, Ng DYF, Chew JW, Wang R. Organic solvent forward osmosis membranes for pharmaceutical concentration. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119965] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Organic vapour permeation in amorphous and semi-crystalline rubbery membranes: Experimental data versus prediction by solubility parameters. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119211] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Li J, Liao H, Sun Y, Li R, Zhu B, Zhong Z, Yao Z. Fabrication of MWCNTs/PDMS mixed matrix membranes for recovery of volatile aromatic compounds from brewed black tea. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118101] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Khan R, Ul Haq I, Mao H, Zhang AS, Xu LH, Zhen HG, Zhao ZP. Enhancing the pervaporation performance of PEBA/PVDF membrane by incorporating MAF-6 for the separation of phenol from its aqueous solution. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117804] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Separation of Alcohol-Water Mixtures by a Combination of Distillation, Hydrophilic and Organophilic Pervaporation Processes. MEMBRANES 2020; 10:membranes10110345. [PMID: 33207643 PMCID: PMC7697844 DOI: 10.3390/membranes10110345] [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: 10/21/2020] [Revised: 11/02/2020] [Accepted: 11/10/2020] [Indexed: 11/22/2022]
Abstract
It can be stated that in the fine chemical industries, especially in the pharmaceutical industry, large amounts of liquid waste and industrial waste solvents are generated during the production technology. Addressing these is a key issue because their disposal often accounts for the largest proportion of the cost of the entire technology. There is need to develop regeneration processes that are financially beneficial to the plant and, if possible, reuse the liquid waste in the spirit of a circular economy, in a particular technology, or possibly elsewhere. The distillation technique proves to be a good solution in many cases, but in the case of mixtures with high water content and few volatile components, this process is often not cost-effective due to its high steam consumption, and in the case of azeotropic mixtures there are separation constraints. In the present work, the membrane process considered as an alternative; pervaporation is demonstrated through the treatment of low alcohol (methanol and ethanol) aqueous mixtures. Alcohol-containing process wastewaters were investigated in professional process simulator environment with user-added pervaporation modules. Eight different methods were built up in ChemCAD flowsheet simulator: organophilic pervaporation (OPV), hydrophilic pervaporation (HPV), hydrophilic pervaporation with recirculation (R-HPV), dynamic organophilic pervaporation (Dyn-OPV), dynamic hydronophilic pervaporation (Dyn-HPV), hybrid distillation-organophilic pervaporation (D + OPV), hybrid distillation-hydrophilic pervaporation (D + HPV), and finally hybrid distillation-hydrophilic pervaporation with recirculation (R-D + HPV). It can be stated the last solution in line was the most suitable in the terms of composition, however distillation of mixture with high water content has significant heat consumption. Furthermore, the pervaporation supplemented with dynamic tanks is not favourable due to the high recirculation rate in the case of tested mixtures and compositions.
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Mesoporous Silica Membranes Silylated by Fluorinated and Non-Fluorinated Alkylsilanes for the Separation of Methyl Tert-Butyl Ether from Water. MEMBRANES 2020; 10:membranes10040070. [PMID: 32326643 PMCID: PMC7231391 DOI: 10.3390/membranes10040070] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/09/2020] [Accepted: 04/12/2020] [Indexed: 11/17/2022]
Abstract
It is of great significance to separate hazardous methyl tert-butyl ether (MTBE) from water in terms of environmental protection and human health. In the present work, α-Al2O3-suppotred silica membranes were prepared by the sol-gel and dip-coating technique. Two fluorinated alkylsilanes (1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) and trifluoropropyltriethoxysilane (TFPTES)) and two non-fluorinated alkylsilanes (octyltriethoxysilane (OTES) and propyltriethoxysilane (PTES)) were adopted to silylate the silica membrane by the post-grafting method which is used for the separation of MTBE from water by pervaporation. The results show that silylation enhances the hydrophobicity of silica membranes. The silylated silica membranes are selective towards MTBE, and the MTBE/water separation factor varies with grafting agents in the order: PFOTES > TFPTES > OTES > PTES. Membranes silylated with fluorinated carbon chains seem to be more selective towards MTBE than those with non-fluorinated carbon chains. The total flux is proportional to the pore volume of silica membranes, which depends on grafting agents in the order: PTES > PFOTES > OTES > TFPTES. Considering both total flux and selectivity, the PFOTES-SiO2 membrane is most effective in separation, with a MTBE/water separation factor of 24.6 and a total flux of 0.35 kg m-2 h-1 under a MTBE concentration of 3.0% and a feed temperature of 30 °C.
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Fujiwara N, Nishida T, Yamamoto H. Adaptation of Hansen solubility parameter in evaluating transparency of composite materials. Heliyon 2019; 5:e02833. [PMID: 32083197 PMCID: PMC7019074 DOI: 10.1016/j.heliyon.2019.e02833] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/19/2019] [Accepted: 11/06/2019] [Indexed: 11/28/2022] Open
Abstract
In the preparation of polymer-based functional materials, it is often difficult to express the desired function using a single substance. Thus, multiple materials are often combined to achieve a desired function using methods such as the addition of a filler or lamination. However, when materials are mixed using a filler, the transparency of the polymer decreases. Therefore, a prediction indicator for transparency is needed. In this study, we focused on using the Hansen solubility parameter (HSP) as a predictor of transparency. The value of δd, which is the dispersion force term of the solubility parameter, is considered to be related to the refractive index of the solvent. Silica particles were selected as model particles, and the HSP value was determined. We examined the possibility of evaluating the transparency in a solvent containing silica particles based on the HSP value, and our results indicated that a smaller difference in δd between the particles and solvent corresponded with a higher transparency. The HSP value could be used as an index for evaluation of the dispersibility and solubility of the polymer. By using HSP theory in the material design of composite materials, it is thus considered possible to use the same index to simultaneously evaluate the dispersibility evaluation and predict the transparency of the filler.
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Affiliation(s)
- Nobuyuki Fujiwara
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, Japan
| | - Takahiro Nishida
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, Japan
| | - Hideki Yamamoto
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, Japan
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Qin J, Wang X, Jiang Q, Cao M. Optimizing Dispersion, Exfoliation, Synthesis, and Device Fabrication of Inorganic Nanomaterials Using Hansen Solubility Parameters. Chemphyschem 2019; 20:1069-1097. [DOI: 10.1002/cphc.201900110] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 03/18/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Jinwen Qin
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
| | - Xin Wang
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
| | - Qiwang Jiang
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
| | - Minhua Cao
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
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Evaluation of adsorption of organic solvents to modified hydrophobic silica adsorbents based on Hansen solubility parameter. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Tsuru T. Silica-Based Membranes with Molecular-Net-Sieving Properties: Development and Applications. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2018. [DOI: 10.1252/jcej.17we235] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Li D, Yao J, Sun H, Liu B, Li D, van Agtmaal S, Feng C. Preparation and characterization of SiO2/PDMS/PVDF composite membrane for phenols recovery from coal gasification wastewater in pervaporation. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.01.045] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Synthesis and characterization of hydrogen selective silica membranes prepared by chemical vapor deposition of vinyltriethoxysilane. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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20
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Gnus M, Dudek G, Turczyn R. The influence of filler type on the separation properties of mixed-matrix membranes. CHEMICAL PAPERS 2017; 72:1095-1105. [PMID: 29681683 PMCID: PMC5908829 DOI: 10.1007/s11696-017-0363-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 12/03/2017] [Indexed: 12/03/2022]
Abstract
Chitosan-based membranes filled with different metal oxide particles were prepared and their performance in ethanol dehydration process depending on the type of oxide and loading was discussed. For membrane preparation three oxides: TiO2, Cr2O3 or Fe3O4 were selected. From experimental data suitable ethanol and water transport coefficients were evaluated. As shown in the results, applied fillers in different ways affect the separation properties. Presence of TiO2 significantly affects the normalized total flux, increasing its value. On the other hand, addition of Fe3O4 influences most of all the separation factor, which is the among all investigated membranes. For membranes containing chromium(III) oxide as a filler, improvement in the separation properties is observed only in the case when the Cr2O3 content equals to 5 wt%. Above this concentration significant deterioration of separation properties is observed. The best performance has mixed-matrix membranes (MMMs) with magnetite, where the values of PSI are equal to 16.3 and 296.8 kg/m−2 h µm for pristine and 15 wt% filler content, respectively.
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Affiliation(s)
- Małgorzata Gnus
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, M. Strzody 9 Street, 44-100 Gliwice, Poland
| | - Gabriela Dudek
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, M. Strzody 9 Street, 44-100 Gliwice, Poland
| | - Roman Turczyn
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, M. Strzody 9 Street, 44-100 Gliwice, Poland
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22
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Dudek G, Gnus M, Strzelewicz A, Turczyn R, Krasowska M. The influence of metal oxides on the separation properties of hybrid alginate membranes. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1341532] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Gabriela Dudek
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland
| | - Małgorzata Gnus
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland
| | - Anna Strzelewicz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland
| | - Roman Turczyn
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland
| | - Monika Krasowska
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland
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