{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T02:06:42Z","timestamp":1791166002101,"version":"4.1.0"},"reference-count":71,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2025,12,25]],"date-time":"2025-12-25T00:00:00Z","timestamp":1766620800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National University of Science and Technology POLITEHNICA Bucharest","award":["Grant GNAcARUT 178\/04.12.2023"],"award-info":[{"award-number":["Grant GNAcARUT 178\/04.12.2023"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The goal of this study was to explore how different operating parameters influence the performance of a polyvinyl alcohol (PVA) membrane in pervaporation for separating ethanol\u2013water mixtures. Specifically, the focus was on understanding how variations in feed composition, temperature, and permeate pressure affect the separation efficiency. The study aimed to provide a range of operating conditions that offer a balance between maximizing both the purity and quantity of ethanol. This was achieved through statistical models, which were generated by simulating the pervaporation process under various conditions using COMSOL Multiphysics\u00ae 6.3 and following a Box\u2013Behnken design. It was found that similar operating conditions (temperature ~100 \u00b0C; pressure ~4\u20135 kPa) are suitable for both kinds of mixtures near azeotrope, with higher water content (~0.15 mass fraction) and lower water content (~0.05 mass fraction) obtaining very high recuperation degrees (generally above 99%). For more concentrated solutions (lower water content), it was possible to obtain optimal trade-off solutions (separation degree vs. retentate enrichment in ethanol), even at lower temperatures (~80 \u00b0C).<\/jats:p>","DOI":"10.3390\/polym18010065","type":"journal-article","created":{"date-parts":[[2025,12,26]],"date-time":"2025-12-26T02:07:58Z","timestamp":1766714878000},"page":"65","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Near Azeotropic Ethanol\u2013Water Mixture Pervaporation Through a Polyvinyl Alcohol Membrane: A Parametric Study on Process Efficiency"],"prefix":"10.3390","volume":"18","author":[{"given":"Cristiana Lumini\u021ba","family":"G\u00eejiu","sequence":"first","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel Dumitru","family":"Dinculescu","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2255-2696","authenticated-orcid":false,"given":"Raluca","family":"Isopescu","sequence":"additional","affiliation":[{"name":"Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"121244","DOI":"10.1016\/j.seppur.2022.121244","article-title":"Review of alternative technologies for acetone\u2013butanol\u2013ethanol separation: Principles, state-of-the-art and development trends","volume":"298","author":"Cai","year":"2022","journal-title":"Sep. 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