Nanofiltration of Cork Wastewaters and Their Possible Use in Leather Industry as Tanning Agents

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dc.contributor.authorGeraldes, V.
dc.contributor.authorMinhalma, M.
dc.contributor.authorde Pinho, M. N.
dc.contributor.authorAnil, A.
dc.contributor.authorOzgunay, H.
dc.contributor.authorBitlisli, B. O.
dc.contributor.authorSari, O.
dc.date.accessioned2019-10-27T20:21:39Z
dc.date.available2019-10-27T20:21:39Z
dc.date.issued2009
dc.departmentEge Üniversitesien_US
dc.description.abstractCork processing wastewater is a very complex mixture of vegetal extracts and has, among other natural compounds, a very high content of phenolic/tannic colloidal matter that is responsible for severe environmental problems. In the present work, the concentration of this wastewater by nanofiltration was investigated with the aim of producing a cork tannin concentrate to be utilized in tanning. Permeation results showed that the permeate fluxes are controlled by both osmotic pressure and fouling/gel layer phenomena, leading to a rapid decrease of permeate fluxes with the concentration factor. The rejection coefficients to organic matter were higher than 95%, indicating that nanofiltration has a very good ability to concentrate the tannins and produce a permeate stream depleted from organic matter. The cork tannin concentrate obtained by nanofiltration and evaporation had total solids concentration of 34.8 g/l. The skins tanned by this concentrate were effectively converted to leather with a shrinking temperature of 7 degrees C.en_US
dc.description.sponsorshipFCTFundacao para a Ciencia e a Tecnologia (FCT) [PTDC/EQU-EQU/68424/2006]en_US
dc.description.sponsorshipThe authors Would like to thank FCT for the funding of the project PTDC/EQU-EQU/68424/2006.en_US
dc.identifier.endpage357en_US
dc.identifier.issn1230-1485
dc.identifier.issn1230-1485en_US
dc.identifier.issue3en_US
dc.identifier.startpage353en_US
dc.identifier.urihttps://hdl.handle.net/11454/41791
dc.identifier.volume18en_US
dc.identifier.wosWOS:000267245100006en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherHarden_US
dc.relation.ispartofPolish Journal of Environmental Studiesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectnanofiltrationen_US
dc.subjectcork wastewateren_US
dc.subjecttanninen_US
dc.subjecttanningen_US
dc.subjectleatheren_US
dc.titleNanofiltration of Cork Wastewaters and Their Possible Use in Leather Industry as Tanning Agentsen_US
dc.typeArticleen_US

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