PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation
Solvent dehydration and recovery are essential operations across various industries, including pharmaceuticals and electronics, where product quality is strongly influenced by residual water content. Ethanol and isopropanol, two widely used solvents, pose significant challenges for dehydration due t...
| Autores: | ; ; ; |
|---|---|
| Tipo de documento: | Artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:dnet:ucreareposit::40817f39c53c7112908489e01f40ca7d |
| Acceso en línea: | https://hdl.handle.net/10902/40218 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Pervaporation Solvent dehydration Hollow fibers Azeotropic separation |
| _version_ | 1878732684289638400 |
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| author | González Revuelta, Daniel |
| author2 | Fallanza Torices, Marcos|||0000-0003-3834-5787 Ortiz Sainz de Aja, Alfredo|||0000-0002-3268-8116 Gorri Cirella, Daniel|||0000-0002-5403-1545 |
| author2_role | author author author |
| author_browse | Fallanza Torices, Marcos|||0000-0003-3834-5787 González Revuelta, Daniel Gorri Cirella, Daniel|||0000-0002-5403-1545 Ortiz Sainz de Aja, Alfredo|||0000-0002-3268-8116 |
| author_facet | González Revuelta, Daniel Fallanza Torices, Marcos|||0000-0003-3834-5787 Ortiz Sainz de Aja, Alfredo|||0000-0002-3268-8116 Gorri Cirella, Daniel|||0000-0002-5403-1545 |
| author_role | author |
| collection | UCrea Repositorio Abierto de la Universidad de Cantabria |
| description | Solvent dehydration and recovery are essential operations across various industries, including pharmaceuticals and electronics, where product quality is strongly influenced by residual water content. Ethanol and isopropanol, two widely used solvents, pose significant challenges for dehydration due to azeotrope formation. Conventional approaches are highly energy-intensive and often require entrainers. As an alternative separation process, this study investigates pervaporation using hydrophilic hollow fiber membranes. The main objective was to develop dual-layer hollow fibers combining the complementary properties of Matrimid and polyvinyl alcohol (PVA), previously evaluated in flat-sheet configuration. A Matrimid-based support with a porous internal structure and a thin dense outer layer was fabricated by spinning, followed by deposition of a dense selective PVA layer via dip-coating. Membranes were characterized by SEM, and solvent uptake of both polymers was evaluated. Pervaporation experiments were performed at 50 and 70 °C using ethanol/water and isopropanol/water mixtures containing 2.5–25 wt.% water, including azeotropic compositions. The Matrimid/PVA hollow fiber membrane exhibited promising performance, achieving permeation fluxes of 126 g m-2 h-1 for ethanol/water and 121 g m-2 h-1 for isopropanol/water at 50 °C and 15 wt.% water in the feed, with water concentrations in the permeate of 95 wt.% and 98 wt.%, respectively. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_47c5ca4a90d3bac1ccdda37e715f4568 |
| institution | Universidad de Cantabria (UC) |
| instname_str | Universidad de Cantabria (UC) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:dnet:ucreareposit::40817f39c53c7112908489e01f40ca7d |
| publishDate | 2026 |
| publishDateSort | 2026 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | UCrea Repositorio Abierto de la Universidad de Cantabria |
| spelling | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation González Revuelta, Daniel Fallanza Torices, Marcos|||0000-0003-3834-5787 Ortiz Sainz de Aja, Alfredo|||0000-0002-3268-8116 Gorri Cirella, Daniel|||0000-0002-5403-1545 Pervaporation Solvent dehydration Hollow fibers Azeotropic separation Solvent dehydration and recovery are essential operations across various industries, including pharmaceuticals and electronics, where product quality is strongly influenced by residual water content. Ethanol and isopropanol, two widely used solvents, pose significant challenges for dehydration due to azeotrope formation. Conventional approaches are highly energy-intensive and often require entrainers. As an alternative separation process, this study investigates pervaporation using hydrophilic hollow fiber membranes. The main objective was to develop dual-layer hollow fibers combining the complementary properties of Matrimid and polyvinyl alcohol (PVA), previously evaluated in flat-sheet configuration. A Matrimid-based support with a porous internal structure and a thin dense outer layer was fabricated by spinning, followed by deposition of a dense selective PVA layer via dip-coating. Membranes were characterized by SEM, and solvent uptake of both polymers was evaluated. Pervaporation experiments were performed at 50 and 70 °C using ethanol/water and isopropanol/water mixtures containing 2.5–25 wt.% water, including azeotropic compositions. The Matrimid/PVA hollow fiber membrane exhibited promising performance, achieving permeation fluxes of 126 g m-2 h-1 for ethanol/water and 121 g m-2 h-1 for isopropanol/water at 50 °C and 15 wt.% water in the feed, with water concentrations in the permeate of 95 wt.% and 98 wt.%, respectively. This work was supported by grant PID2022–136553OB-I00 funded by MICIU/AEI/10.13039/501100011033 and by European Union NextGenerationEU/PRTR. Furthermore, authors acknowledge the funds received within the project PLAST4H2 EAPA 0018/2022 within the framework on the INTERREG ATLANTIC program. In addition, the invaluable collaboration of Mireya Revuelta in the experimental runs is also gratefully recognized. Elsevier https://hdl.handle.net/10902/40218 |
| spellingShingle | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation González Revuelta, Daniel Pervaporation Solvent dehydration Hollow fibers Azeotropic separation |
| title | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation |
| title_full | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation |
| title_fullStr | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation |
| title_full_unstemmed | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation |
| title_short | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation |
| title_sort | PVA/Matrimid composite dual-layer hollow fiber membranes for selective water removal from organic solvents by pervaporation |
| topic | Pervaporation Solvent dehydration Hollow fibers Azeotropic separation |
| topic_facet | Pervaporation Solvent dehydration Hollow fibers Azeotropic separation |
| url | https://hdl.handle.net/10902/40218 |