Related Experiment Video
Updated: Jun 28, 2026
06:39
A High Performance Impedance-based Platform for Evaporation Rate Detection
Published on: October 17, 2016
Pervaporation: an integrated evaporation/gas-diffusion approach to analytical continuous separation techniques
I L de Mattos1, M D de Castro, M Valcárcel
1Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Córdoba, Spain.
Talanta
|May 1, 1995
Summary
A novel flexible pervaporation module was developed for adaptable separation processes. This system effectively determines ethanol content in wine using continuous separation, showcasing its practical application.
Area of Science:
- Chemical Engineering
- Separation Science
Background:
- Pervaporation is a membrane separation process with applications in various chemical and biochemical industries.
- Flexible modules are needed to adapt to different process requirements and sample volumes.
Purpose of the Study:
- To develop and characterize a flexible pervaporation module.
- To establish a continuous separation method for determining ethanol in wine.
Main Methods:
- Fabrication of a flexible pervaporation module with adjustable donor/acceptor volumes using spacers.
- Performance evaluation under varying conditions (flow rates, temperature, membrane type, flow mode).
- Development and application of an ethanol determination method in wine samples.
Main Results:
- The flexible module demonstrated adaptability in volume control.
- Module performance was characterized across various dynamic and continuous pervaporation parameters.
- The developed method successfully quantified ethanol in diverse wine samples.
Conclusions:
- The flexible pervaporation module offers adjustable volumes for tailored separation.
- The continuous separation approach is validated for accurate ethanol determination in wine.
- This technology has potential for real-time analysis and process optimization.
More Related Videos
05:31Gas Chromatography-Mass Spectrometry Paired with Total Vaporization Solid-Phase Microextraction as a Forensic Tool
Published on: May 25, 2021
07:57Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
Related Concept Videos
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
01:10Volatilization
Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
01:01Distillation: Vapor–Liquid Equilibria
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 with...
01:08Gas Chromatography: Sample Injection Systems
In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...
Two primary injection methods are used...
01:13Gas Chromatography: Introduction
Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a column.
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a column.
01:18Supercritical Fluid Chromatography
Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
SFC utilizes a supercritical fluid mobile phase,...