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Analysis of the permeation behavior of ethanol/water mixtures through a polydimethylsiloxane (PDMS) membrane in pervaporation and vapor permeation conditions
- Source :
- Separation and Purification Technology. 227:115738
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- In this study the interactions between ethanol and water penetrating in a supported polydimethylsiloxane membrane were investigated both using experimental and mathematical modelling work. To reach comprehensive analysis of the membrane performance and the penetrant interactions, the experimental work included a wide range of pervaporation and vapor permeation experiments with pure and binary ethanol-water mixtures. A Maxwell-Stefan model was used to further analyze the membrane performance with a Flory-Huggins formulation to describe the sorption behavior. According to the formed model, both water and ethanol permeation are slowed down from the permeation rates observed with pure feeds and in binary permeation especially the experimental ethanol flux is lower than the flux expected by the model. This suggests that the interactions between the penetrants in PDMS are high resulting to decreased diffusion rate of both ethanol and water.
- Subjects :
- Materials science
Ethanol
Polydimethylsiloxane
Diffusion
PDMS membrane
Filtration and Separation
Sorption
02 engineering and technology
Permeation
021001 nanoscience & nanotechnology
Analytical Chemistry
chemistry.chemical_compound
Pervaporation
Membrane
Penetrant (mechanical, electrical, or structural)
020401 chemical engineering
chemistry
Chemical engineering
Vapor permeation
Mass transfer
0204 chemical engineering
0210 nano-technology
Maxwell-Stefan theory
Subjects
Details
- ISSN :
- 13835866
- Volume :
- 227
- Database :
- OpenAIRE
- Journal :
- Separation and Purification Technology
- Accession number :
- edsair.doi.dedup.....12b3fdbd4e2312a28cb3267a56b13b3a