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Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation

The vacuum membrane distillation (VMD) process was applied to separate ethanol from a simulated ethanol–water solution using a commercial polytetrafluoroethylene (PTFE) membrane. The presence of ethanol in the ethanol–water solution with a 2 wt.% ethanol concentration at a temperature above 40 °C du...

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Autores principales: Nassif, Abeer G., Ibrahim, Salah S., Majdi, Hasan Sh., Alsalhy, Qusay F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9412536/
https://www.ncbi.nlm.nih.gov/pubmed/36005722
http://dx.doi.org/10.3390/membranes12080807
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author Nassif, Abeer G.
Ibrahim, Salah S.
Majdi, Hasan Sh.
Alsalhy, Qusay F.
author_facet Nassif, Abeer G.
Ibrahim, Salah S.
Majdi, Hasan Sh.
Alsalhy, Qusay F.
author_sort Nassif, Abeer G.
collection PubMed
description The vacuum membrane distillation (VMD) process was applied to separate ethanol from a simulated ethanol–water solution using a commercial polytetrafluoroethylene (PTFE) membrane. The presence of ethanol in the ethanol–water solution with a 2 wt.% ethanol concentration at a temperature above 40 °C during the MD process may result in membrane failure due to an increase in the chance of the PTFE membrane wetting at high temperatures. Therefore, the operating temperature in this study was not higher than 35 °C, with an initial ethanol concentration up to 10 wt.%. This work focuses on optimizing the VMD operating parameters using the Taguchi technique based on an analysis of variance (ANOVA). It was found that the feed temperature was the most-affected parameter, leading to a significant increase in the permeation flux of the PTFE membrane. Our results also showed that the permeate flux was reported at about 24.145 kg/m(2)·h, with a separation factor of 8.6 of the permeate under the operating conditions of 2 wt.%, 30 °C, 60 mm Hg(abs), and 0.6 L/min feed (concentration, temperature, permeate vacuum pressure, and flow rate, respectively). The initial feed concentration, vacuum pressure, and feed flow rate have a lower impact on the permeation flux.
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spelling pubmed-94125362022-08-27 Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation Nassif, Abeer G. Ibrahim, Salah S. Majdi, Hasan Sh. Alsalhy, Qusay F. Membranes (Basel) Article The vacuum membrane distillation (VMD) process was applied to separate ethanol from a simulated ethanol–water solution using a commercial polytetrafluoroethylene (PTFE) membrane. The presence of ethanol in the ethanol–water solution with a 2 wt.% ethanol concentration at a temperature above 40 °C during the MD process may result in membrane failure due to an increase in the chance of the PTFE membrane wetting at high temperatures. Therefore, the operating temperature in this study was not higher than 35 °C, with an initial ethanol concentration up to 10 wt.%. This work focuses on optimizing the VMD operating parameters using the Taguchi technique based on an analysis of variance (ANOVA). It was found that the feed temperature was the most-affected parameter, leading to a significant increase in the permeation flux of the PTFE membrane. Our results also showed that the permeate flux was reported at about 24.145 kg/m(2)·h, with a separation factor of 8.6 of the permeate under the operating conditions of 2 wt.%, 30 °C, 60 mm Hg(abs), and 0.6 L/min feed (concentration, temperature, permeate vacuum pressure, and flow rate, respectively). The initial feed concentration, vacuum pressure, and feed flow rate have a lower impact on the permeation flux. MDPI 2022-08-20 /pmc/articles/PMC9412536/ /pubmed/36005722 http://dx.doi.org/10.3390/membranes12080807 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nassif, Abeer G.
Ibrahim, Salah S.
Majdi, Hasan Sh.
Alsalhy, Qusay F.
Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation
title Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation
title_full Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation
title_fullStr Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation
title_full_unstemmed Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation
title_short Ethanol Separation from an Ethanol–Water Solution Using Vacuum Membrane Distillation
title_sort ethanol separation from an ethanol–water solution using vacuum membrane distillation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9412536/
https://www.ncbi.nlm.nih.gov/pubmed/36005722
http://dx.doi.org/10.3390/membranes12080807
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