Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol
Dehydration of ethylene glycol-water mixture was carried out in a laboratory pervaporation unit using a flat sheet membrane test cell. Polyvinyl alcohol-polyether sulfone (PVA-PES) composite membranes were synthesized and cross linked with two different concentrations, viz 0.2 and 0.5% of disodium t...
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Slovenian Chemical Society
2018-12-01
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doaj-a99cc068a6b04c8e91ff5c7d0b22b2162020-11-25T01:57:25ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552018-12-0165490291810.17344/acsi.2018.4581632Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene GlycolKaushik Nath0Haresh K Dave1G H Patel College of Engineering & Technology (Gujarat Technological University)Department of Chemical Engineering G H Patel College of Engineering & Technology Vallabh Vidyanagar, Gujarat, IndiaDehydration of ethylene glycol-water mixture was carried out in a laboratory pervaporation unit using a flat sheet membrane test cell. Polyvinyl alcohol-polyether sulfone (PVA-PES) composite membranes were synthesized and cross linked with two different concentrations, viz 0.2 and 0.5% of disodium tetraborate (borax). The derived membranes were extensively characterized for their morphology, intermolecular interactions, thermo-mechanical stability, and physicochemical properties using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and water uptake studies. The membrane performance was evaluated in terms of pervaporation flux, separation factor, selectivity, permeability and solute diffusion coefficients of EG-water mixture at varying feed flow rate. Both in terms of flux and separation factor PVA-PES-0.2% borax composite membrane was found superior to PVA-PES-0.5% borax crosslinked and its uncrosslinked counterpart. Cross-linking the composite with borax produced a membrane with lower crystallinity and a smaller swelling degree, but having improved thermostability and mechanical properties.https://journals.matheo.si/index.php/ACSi/article/view/4581Pervaporationmembraneswelling, fluxselectivityseparation factor, diffusion coefficient |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kaushik Nath Haresh K Dave |
spellingShingle |
Kaushik Nath Haresh K Dave Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol Acta Chimica Slovenica Pervaporation membrane swelling, flux selectivity separation factor, diffusion coefficient |
author_facet |
Kaushik Nath Haresh K Dave |
author_sort |
Kaushik Nath |
title |
Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol |
title_short |
Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol |
title_full |
Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol |
title_fullStr |
Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol |
title_full_unstemmed |
Synthesis, Characterization and Application of Disodium Tetraborate Cross-Linked Polyvinyl Alcohol Membranes for Pervaporation Dehydration of Ethylene Glycol |
title_sort |
synthesis, characterization and application of disodium tetraborate cross-linked polyvinyl alcohol membranes for pervaporation dehydration of ethylene glycol |
publisher |
Slovenian Chemical Society |
series |
Acta Chimica Slovenica |
issn |
1318-0207 1580-3155 |
publishDate |
2018-12-01 |
description |
Dehydration of ethylene glycol-water mixture was carried out in a laboratory pervaporation unit using a flat sheet membrane test cell. Polyvinyl alcohol-polyether sulfone (PVA-PES) composite membranes were synthesized and cross linked with two different concentrations, viz 0.2 and 0.5% of disodium tetraborate (borax). The derived membranes were extensively characterized for their morphology, intermolecular interactions, thermo-mechanical stability, and physicochemical properties using field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and water uptake studies. The membrane performance was evaluated in terms of pervaporation flux, separation factor, selectivity, permeability and solute diffusion coefficients of EG-water mixture at varying feed flow rate. Both in terms of flux and separation factor PVA-PES-0.2% borax composite membrane was found superior to PVA-PES-0.5% borax crosslinked and its uncrosslinked counterpart. Cross-linking the composite with borax produced a membrane with lower crystallinity and a smaller swelling degree, but having improved thermostability and mechanical properties. |
topic |
Pervaporation membrane swelling, flux selectivity separation factor, diffusion coefficient |
url |
https://journals.matheo.si/index.php/ACSi/article/view/4581 |
work_keys_str_mv |
AT kaushiknath synthesischaracterizationandapplicationofdisodiumtetraboratecrosslinkedpolyvinylalcoholmembranesforpervaporationdehydrationofethyleneglycol AT hareshkdave synthesischaracterizationandapplicationofdisodiumtetraboratecrosslinkedpolyvinylalcoholmembranesforpervaporationdehydrationofethyleneglycol |
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1724974310925271040 |