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A new type of composite membrane PVA-NaY/PA-6 for separation of industrially valuable mixture ethanol/ethyl tert-butyl ether by pervaporation

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dc.contributor.authorKnozowska, K.
dc.contributor.authorKujawa, J.
dc.contributor.authorLagzdins, R.
dc.contributor.authorFigoli, A.
dc.contributor.authorKujawski, W.
dc.date.accessioned2024-11-27T07:42:11Z
dc.date.available2024-11-27T07:42:11Z
dc.date.issued2020
dc.description.abstract© 2020 by the authors.Pervaporation is a membrane technique used to separate azeotropic and close boiling solvents. Heterogenous PVA composite membranes with NaY zeolite supported on polyamide-6 were fabricated and utilized in organic-organic pervaporation. The efficiency of prepared membranes was evaluated in the separation of ethanol/ethyl tert-butyl ether (EtOH/ETBE) using separation factor (β) and the thickness normalized pervaporation separation index (PSIN). Implementation of the fringe projection phase-shifting method allowed to the determined contact angle corrected by roughness. The influence of the presence of water traces in the feed on the overall separation efficiency was also discussed using the enrichment factor for water (EFwater). The incorporation of NaY into PVA matrix increases surface roughness and hydrophilicity of the composite membrane. It was found that membranes selectively transport ethanol from the binary EtOH/ETBE mixture. The values of β (2.3) and PSIN (288 μm g m-2 h-1) for PVA-NaY/PA6 membrane were improved by 143% and 160% in comparison to the values for the pristine PVA/PA6 membrane. It was found that membranes showed EFwater > 1, thus revealing the preferential transport of water molecules across membranes. These results are also significant for the design of membranes for the removal of water excess from the mixtures of organic solvents.
dc.identifier.citationA new type of composite membrane PVA-NaY/PA-6 for separation of industrially valuable mixture ethanol/ethyl tert-butyl ether by pervaporation / Knozowska, K. [et al.] // Materials. - 2020. - 13. - № 17. - 10.3390/MA13173676
dc.identifier.doi10.3390/MA13173676
dc.identifier.urihttps://www.doi.org/10.3390/MA13173676
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85090398062&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000571134900001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22302
dc.relation.ispartofMaterials
dc.titleA new type of composite membrane PVA-NaY/PA-6 for separation of industrially valuable mixture ethanol/ethyl tert-butyl ether by pervaporation
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue17
oaire.citation.volume13
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