Pervaporation performance of Ag-PVA nanocomposite membranes: Effect of operating temperature

Asmaa Selim, András József Tóth, Eniko Haaz, Dániel Fózer, Péter Mizsey

Research output: Contribution to journalArticle

Abstract

The features of pervaporation are continuously improved with the production of more and more efficient membranes. In our present study, silver nanoparticles are in-situ generated in a poly (vinyl alcohol) using solution-casting in order to enhance its capability for pervaporation. The membrane is tested on the case study of ethanol dehydration by pervaporation. Effect of silver content on the pervaporation separation index and the enrichment factor of the membrane at 15 % mass water at 40 °C are reported. Pervaporation data for nanocomposite membranes show around 100 % increase in the water permeance values while the intrinsic selectivity decreases that is typical for pervaporation membranes. The water permeances of original crosslinked PVA membrane and the 2.5 % silver loaded PVA membrane are 26.65 and 70.45 (g/m2.kPa.h), respectively. The values of total flux are closely related to water flux, showing that membranes could be successfully assigned to separate water from ethanol even at the azeotropic point. The influence of temperature on the efficiency of the pervaporation process, permeation parameter and diffusion coefficient of the feed component is also discussed. The negative heat of sorption (∆Hs) values calculated on the basis of the estimated Arrhenius activation energy values indicates that the sorption process is controlled by Langmuir's mode. Our results show that the 0.5 mass% silver loaded poly (vinyl alcohol) membrane exhibits excellent PV performance.

Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalPeriodica Polytechnica Chemical Engineering
Volume64
Issue number1
DOIs
Publication statusPublished - Jan 1 2020

Fingerprint

Polyvinyl Alcohol
Pervaporation
Metal nanoparticles
Polyvinyl alcohols
Nanocomposites
Evaporation
Ethanol
Activation energy
Membranes
Silver
Water
Temperature
Sorption
Alcohols
Fluxes
Dehydration
Permeation
Casting
Nanoparticles
Economics

Keywords

  • Ethanol-water system
  • Pervaporation
  • Poly (vinyl alcohol)
  • Silver nanoparticles

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Pervaporation performance of Ag-PVA nanocomposite membranes : Effect of operating temperature. / Selim, Asmaa; Tóth, András József; Haaz, Eniko; Fózer, Dániel; Mizsey, Péter.

In: Periodica Polytechnica Chemical Engineering, Vol. 64, No. 1, 01.01.2020, p. 85-92.

Research output: Contribution to journalArticle

Selim, Asmaa ; Tóth, András József ; Haaz, Eniko ; Fózer, Dániel ; Mizsey, Péter. / Pervaporation performance of Ag-PVA nanocomposite membranes : Effect of operating temperature. In: Periodica Polytechnica Chemical Engineering. 2020 ; Vol. 64, No. 1. pp. 85-92.
@article{8eefa7e0dde34f048962fefab58a1f49,
title = "Pervaporation performance of Ag-PVA nanocomposite membranes: Effect of operating temperature",
abstract = "The features of pervaporation are continuously improved with the production of more and more efficient membranes. In our present study, silver nanoparticles are in-situ generated in a poly (vinyl alcohol) using solution-casting in order to enhance its capability for pervaporation. The membrane is tested on the case study of ethanol dehydration by pervaporation. Effect of silver content on the pervaporation separation index and the enrichment factor of the membrane at 15 {\%} mass water at 40 °C are reported. Pervaporation data for nanocomposite membranes show around 100 {\%} increase in the water permeance values while the intrinsic selectivity decreases that is typical for pervaporation membranes. The water permeances of original crosslinked PVA membrane and the 2.5 {\%} silver loaded PVA membrane are 26.65 and 70.45 (g/m2.kPa.h), respectively. The values of total flux are closely related to water flux, showing that membranes could be successfully assigned to separate water from ethanol even at the azeotropic point. The influence of temperature on the efficiency of the pervaporation process, permeation parameter and diffusion coefficient of the feed component is also discussed. The negative heat of sorption (∆Hs) values calculated on the basis of the estimated Arrhenius activation energy values indicates that the sorption process is controlled by Langmuir's mode. Our results show that the 0.5 mass{\%} silver loaded poly (vinyl alcohol) membrane exhibits excellent PV performance.",
keywords = "Ethanol-water system, Pervaporation, Poly (vinyl alcohol), Silver nanoparticles",
author = "Asmaa Selim and T{\'o}th, {Andr{\'a}s J{\'o}zsef} and Eniko Haaz and D{\'a}niel F{\'o}zer and P{\'e}ter Mizsey",
year = "2020",
month = "1",
day = "1",
doi = "10.3311/PPch.13809",
language = "English",
volume = "64",
pages = "85--92",
journal = "Periodica Polytechnica: Chemical Engineering",
issn = "0324-5853",
publisher = "Budapest University of Technology and Economics",
number = "1",

}

TY - JOUR

T1 - Pervaporation performance of Ag-PVA nanocomposite membranes

T2 - Effect of operating temperature

AU - Selim, Asmaa

AU - Tóth, András József

AU - Haaz, Eniko

AU - Fózer, Dániel

AU - Mizsey, Péter

PY - 2020/1/1

Y1 - 2020/1/1

N2 - The features of pervaporation are continuously improved with the production of more and more efficient membranes. In our present study, silver nanoparticles are in-situ generated in a poly (vinyl alcohol) using solution-casting in order to enhance its capability for pervaporation. The membrane is tested on the case study of ethanol dehydration by pervaporation. Effect of silver content on the pervaporation separation index and the enrichment factor of the membrane at 15 % mass water at 40 °C are reported. Pervaporation data for nanocomposite membranes show around 100 % increase in the water permeance values while the intrinsic selectivity decreases that is typical for pervaporation membranes. The water permeances of original crosslinked PVA membrane and the 2.5 % silver loaded PVA membrane are 26.65 and 70.45 (g/m2.kPa.h), respectively. The values of total flux are closely related to water flux, showing that membranes could be successfully assigned to separate water from ethanol even at the azeotropic point. The influence of temperature on the efficiency of the pervaporation process, permeation parameter and diffusion coefficient of the feed component is also discussed. The negative heat of sorption (∆Hs) values calculated on the basis of the estimated Arrhenius activation energy values indicates that the sorption process is controlled by Langmuir's mode. Our results show that the 0.5 mass% silver loaded poly (vinyl alcohol) membrane exhibits excellent PV performance.

AB - The features of pervaporation are continuously improved with the production of more and more efficient membranes. In our present study, silver nanoparticles are in-situ generated in a poly (vinyl alcohol) using solution-casting in order to enhance its capability for pervaporation. The membrane is tested on the case study of ethanol dehydration by pervaporation. Effect of silver content on the pervaporation separation index and the enrichment factor of the membrane at 15 % mass water at 40 °C are reported. Pervaporation data for nanocomposite membranes show around 100 % increase in the water permeance values while the intrinsic selectivity decreases that is typical for pervaporation membranes. The water permeances of original crosslinked PVA membrane and the 2.5 % silver loaded PVA membrane are 26.65 and 70.45 (g/m2.kPa.h), respectively. The values of total flux are closely related to water flux, showing that membranes could be successfully assigned to separate water from ethanol even at the azeotropic point. The influence of temperature on the efficiency of the pervaporation process, permeation parameter and diffusion coefficient of the feed component is also discussed. The negative heat of sorption (∆Hs) values calculated on the basis of the estimated Arrhenius activation energy values indicates that the sorption process is controlled by Langmuir's mode. Our results show that the 0.5 mass% silver loaded poly (vinyl alcohol) membrane exhibits excellent PV performance.

KW - Ethanol-water system

KW - Pervaporation

KW - Poly (vinyl alcohol)

KW - Silver nanoparticles

UR - http://www.scopus.com/inward/record.url?scp=85074451584&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85074451584&partnerID=8YFLogxK

U2 - 10.3311/PPch.13809

DO - 10.3311/PPch.13809

M3 - Article

AN - SCOPUS:85074451584

VL - 64

SP - 85

EP - 92

JO - Periodica Polytechnica: Chemical Engineering

JF - Periodica Polytechnica: Chemical Engineering

SN - 0324-5853

IS - 1

ER -