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Biodegradation rate constants in different NF/UF fractions of cork processing wastewaters

2011-05Journal article Open access
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dc.contributor.authorBernardo, Marisa
dc.contributor.authorSantos, Ana
dc.contributor.authorCantinho, Paula
dc.contributor.authorMinhalma, Miguel
dc.date.accessioned2013-01-30T19:17:16Z
dc.date.available2013-01-30T19:17:16Z
dc.date.issued2011-05
dc.description.abstractCork processing wastewater is an aqueous complex mixture of organic compounds that have been extracted from cork planks during the boiling process. These compounds, such as polysaccharides and polyphenols, have different biodegradability rates, which depend not only on the natureof the compound but also on the size of the compound. The aim of this study is to determine the biochemical oxygen demands (BOD) and biodegradationrate constants (k) for different cork wastewater fractions with different organic matter characteristics. These wastewater fractions were obtained using membrane separation processes, namely nanofiltration (NF) and ultrafiltration (UF). The nanofiltration and ultrafiltration membranes molecular weight cut-offs (MWCO) ranged from 0.125 to 91 kDa. The results obtained showed that the biodegradation rate constant for the cork processing wastewater was around 0.3 d(-1) and the k values for the permeates varied between 0.27-0.72 d(-1), being the lower values observed for permeates generated by the membranes with higher MWCO and the higher values observed for the permeates generated by the membranes with lower MWCO. These higher k values indicate that the biodegradable organic matter that is permeated by the membranes with tighter MWCO is more readily biodegradated.por
dc.identifier.citationBERNARDO, Marisa; SANTOS, Ana; CANTINHO, Paula; MINHALMA, Miguel - Biodegradation rate constants in different NF/UF fractions of cork processing wastewaters. Desalination and Water Treatment. ISSN 1944-3994. Vol. 29, nº 1-3 (2011) p. 264-270.por
dc.identifier.issn1944-3994
dc.identifier.urihttp://hdl.handle.net/10400.21/2111
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherDesalination Publpor
dc.subjectCork Processing Wastewaterpor
dc.subjectFractionationpor
dc.subjectMembranespor
dc.subjectBiochemical Oxygen Demandpor
dc.subjectBiodegradation Rate Constantpor
dc.subjectBodpor
dc.subjectUltrafiltrationpor
dc.titleBiodegradation rate constants in different NF/UF fractions of cork processing wastewaterspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceHopkintonpor
oaire.citation.endPage270por
oaire.citation.issue1-3por
oaire.citation.startPage264por
oaire.citation.titleDesalination and Water Treatmentpor
oaire.citation.volume29por
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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