Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Distillation: Vapor–Liquid Equilibria01:01

Distillation: Vapor–Liquid Equilibria

2.9K
Distillation is a separation technique that takes advantage of the boiling point properties of disparate elements in a mixture. To perform distillation, we begin by heating a miscible mixture of two liquids with a significant difference in boiling points (at least 20°C). As the solution heats up and reaches the bubble point of the more volatile component, some molecules of the more volatile component transition into the gas phase and travel upward into the condenser, which is a glass tube...
2.9K
Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis02:29

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis

10.9K
Overview
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.
10.9K
Vapor Pressure02:34

Vapor Pressure

35.3K
When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
35.3K
Acid-Catalyzed Dehydration of Alcohols to Alkenes02:35

Acid-Catalyzed Dehydration of Alcohols to Alkenes

20.7K
In a dehydration reaction, a hydroxyl group in an alcohol is eliminated along with the hydrogen from an adjacent carbon. Here, the products are an alkene and a molecule of water. Dehydration of alcohols is generally achieved by heating in the presence of an acid catalyst. While the dehydration of primary alcohols requires high temperatures and acid concentrations, secondary and tertiary alcohols can lose a water molecule under relatively mild conditions.
20.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Retraction notice to "Modification of SBA-15 mesoporous silica as an active heterogeneous catalyst for the hydroisomerization and hydrocracking of n-heptane" [Heliyon 8 (2022) e09737].

Heliyon·2025
Same author

Comparative analysis of the performance and emissions of a multi-cylinder diesel engine using biodiesel from underutilized feedstocks.

RSC advances·2025
Same author

Correction: LC-MS/MS characterization of pirtobrutinib impurities and product degradation: stability studies.

RSC advances·2025
Same author

Modeling and Optimization of MXene/PVC Membranes for Enhanced Water Treatment Performance.

Materials (Basel, Switzerland)·2025
Same author

Influence of Silane Treatment on CNM/PAC/PVDF Properties and Performance for Water Desalination by VMD.

Membranes·2025
Same author

LC-MS/MS characterization of pirtobrutinib impurities and product degradation: stability studies.

RSC advances·2024

Related Experiment Video

Updated: Aug 31, 2025

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids
06:45

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids

Published on: August 9, 2024

1.3K

Ethanol Separation from an Ethanol-Water Solution Using Vacuum Membrane Distillation.

Abeer G Nassif1, Salah S Ibrahim1, Hasan Sh Majdi2

  • 1Membrane Technology Research Unit, Department of Chemical Engineering, University of Technology-Iraq, Alsinaa Street, Baghdad 10066, Iraq.

Membranes
|August 25, 2022
PubMed
Summary

Optimizing vacuum membrane distillation (VMD) for ethanol-water separation using polytetrafluoroethylene (PTFE) membranes revealed feed temperature as key. This study enhanced permeate flux and separation efficiency under controlled conditions.

Keywords:
PTEF membraneoptimizationseparation ethanol-water solutionvacuum membrane distillation

More Related Videos

Microdialysis of Ethanol During Operant Ethanol Self-administration and Ethanol Determination by Gas Chromatography
10:11

Microdialysis of Ethanol During Operant Ethanol Self-administration and Ethanol Determination by Gas Chromatography

Published on: September 5, 2012

17.6K
Experimental Protocol for Biodiesel Production with Isolation of Alkenones as Coproducts from Commercial Isochrysis Algal Biomass
09:10

Experimental Protocol for Biodiesel Production with Isolation of Alkenones as Coproducts from Commercial Isochrysis Algal Biomass

Published on: June 24, 2016

20.8K

Related Experiment Videos

Last Updated: Aug 31, 2025

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids
06:45

Author Spotlight: Optimizing Hollow-Fiber Membranes for Continuous Liquid-Liquid Extraction of Medium-Chain Fatty Acids

Published on: August 9, 2024

1.3K
Microdialysis of Ethanol During Operant Ethanol Self-administration and Ethanol Determination by Gas Chromatography
10:11

Microdialysis of Ethanol During Operant Ethanol Self-administration and Ethanol Determination by Gas Chromatography

Published on: September 5, 2012

17.6K
Experimental Protocol for Biodiesel Production with Isolation of Alkenones as Coproducts from Commercial Isochrysis Algal Biomass
09:10

Experimental Protocol for Biodiesel Production with Isolation of Alkenones as Coproducts from Commercial Isochrysis Algal Biomass

Published on: June 24, 2016

20.8K

Area of Science:

  • Chemical Engineering
  • Separation Processes
  • Membrane Technology

Background:

  • Ethanol-water separation is crucial in various industries.
  • Vacuum membrane distillation (VMD) offers a promising separation method.
  • Polytetrafluoroethylene (PTFE) membranes are utilized but susceptible to wetting at higher temperatures.

Purpose of the Study:

  • To optimize vacuum membrane distillation (VMD) operating parameters for ethanol-water separation.
  • To investigate the impact of various parameters on PTFE membrane performance.
  • To determine the optimal conditions for maximizing permeate flux and separation factor.

Main Methods:

  • Utilized vacuum membrane distillation (VMD) with a commercial polytetrafluoroethylene (PTFE) membrane.
  • Employed the Taguchi technique for optimizing operating parameters.
  • Conducted analysis of variance (ANOVA) to identify significant factors.

Main Results:

  • Feed temperature was identified as the most significant parameter influencing permeation flux.
  • Optimal operating conditions yielded a permeate flux of approximately 24.145 kg/m²·h.
  • A separation factor of 8.6 was achieved under optimized conditions (2 wt.% ethanol, 30 °C, 60 mm Hg(abs), 0.6 L/min).

Conclusions:

  • Feed temperature significantly impacts PTFE membrane performance in VMD for ethanol-water separation.
  • The Taguchi method effectively optimized VMD parameters for enhanced separation efficiency.
  • Controlled operating temperatures below 35 °C are recommended to prevent membrane wetting and failure.