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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, Miguel
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.accessioned2013-10-24T11:04:25Z
dc.date.available2013-10-24T11:04:25Z
dc.date.issued2009
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.por
dc.identifier.citationGERALDES, V.; MINHALMA, M.; PINHO, M. N. de; ANIL, A.; OZGUNAY, H.; BITLISTI, B. O.; SARI, O. - Nanofiltration of Cork Wastewaters and Their Possible Use in Leather Industry as Tanning Agents. Polish Journal of Environmental Studies. ISSN 1230-1485. Vol. 18, nr 3 (2009), p. 353-357.por
dc.identifier.issn1230-1485
dc.identifier.other10.1016/j.memsci.2007.12.057
dc.identifier.urihttp://hdl.handle.net/10400.21/2770
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherHardpor
dc.subjectNanofiltrationpor
dc.subjectCork wastewaterpor
dc.subjectTanninpor
dc.subjectTanningpor
dc.subjectLeatherpor
dc.subjectProcessing wastewaterspor
dc.subjectIntegrated processpor
dc.subjectFentons reagentpor
dc.subjectWaste-waterpor
dc.subjectOxidationpor
dc.subjectUltraFiltrationpor
dc.subjectRemovalpor
dc.titleNanofiltration of Cork Wastewaters and Their Possible Use in Leather Industry as Tanning Agentspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOlsztynpor
oaire.citation.endPage357por
oaire.citation.issue3por
oaire.citation.startPage353por
oaire.citation.titlePolish Journal of Environmental Studiespor
oaire.citation.volume18por
person.familyNameMinhalma
person.givenNameMiguel
person.identifier2161276
person.identifier.ciencia-id5C1D-13E2-201B
person.identifier.orcid0000-0002-6770-194X
person.identifier.ridC-3304-2008
person.identifier.scopus-author-id6506304514
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication8ed0648a-758d-4b1d-b364-f8ea7195308f
relation.isAuthorOfPublication.latestForDiscovery8ed0648a-758d-4b1d-b364-f8ea7195308f

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ISEL - Eng. Quim. Biol. - Artigos