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Degradation of phenolic acids by gamma radiation as model compounds of cork wastewaters

2018Journal article Open access
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dc.contributor.authorMadureira, Joana
dc.contributor.authorBarros, Lillian
dc.contributor.authorMelo, Rita
dc.contributor.authorCabo Verde, Sandra
dc.contributor.authorFerreira, Isabel C.F.R.
dc.contributor.authorMargaça, Fernanda M.A.
dc.date.accessioned2018-02-19T10:00:00Z
dc.date.accessioned2018-07-31T15:22:58Z
dc.date.available2018-01-19T10:00:00Z
dc.date.available2018-07-31T15:22:58Z
dc.date.issued2018
dc.description.abstractThe degradation by gamma radiation of four phenolic compounds (gallic acid, protocatechuic acid, vanillic acid and syringic acid) present in cork wastewaters was studied in several treatment conditions. The irradiations were performed under different pH (natural, 3, 7 and 10) and atmospheres (aerated, N2O and O2) for isolated and aqueous mixture solutions of standard phenolic acids. The degradation of the compounds was higher in isolated than in the mixture solutions indicating a protective effect in the quaternary mixture solution. The saturation with N2O promoted the highest degradation rates for all phenolic acids in the mixture. However, at natural pH and in air it was achieved degradation efficiencies>50% for gallic, vanillic and syringic acids in isolated and mixture solutions for a treatment dose of 20 kGy. It was verified that some of the compounds are a degradation product of the others, for example gallic acid was found to be a radiolytic product of syringic, vanillic and protocatechuic acids. Two different compounds were identified as radiolytic products of the studied phenolic acids, and their fragmentation pathways were proposed. The results highlighted that ionizing radiation could be used as clean technology for pollutants degradation using doses of 20 kGy.
dc.description.versioninfo:eu-repo/semantics/publishedVersionen_EN
dc.identifier.citationMadureira, J.; Barros, L.; Melo, R.; Cabo Verde, S.; Ferreira, Isabel C.F.R.; Margaça, F. M.A. (2018). Degradation of phenolic acids by gamma radiation as model compounds of cork wastewaters. Chemical Engineering Journal. ISSN 1385-8947. 341, p. 227-237en_EN
dc.identifier.doi10.1016/j.cej.2018.02.036en_EN
dc.identifier.issn1385-8947
dc.identifier.urihttp://hdl.handle.net/10198/15361
dc.language.isoeng
dc.peerreviewedyesen_EN
dc.relationApplication of Ionizing Radiation for a Sustainable Environment
dc.subjectCork wastewatersen_EN
dc.subjectGamma radiationen_EN
dc.subjectPhenolic acidsen_EN
dc.subjectRadiolytic degradationen_EN
dc.titleDegradation of phenolic acids by gamma radiation as model compounds of cork wastewatersen_EN
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleApplication of Ionizing Radiation for a Sustainable Environment
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/RECI%2FAAG-TEC%2F0400%2F2012/PT
oaire.fundingStream3599-PPCDT
person.familyNameBarros
person.familyNameFerreira
person.givenNameLillian
person.givenNameIsabel C.F.R.
person.identifier469085
person.identifier144781
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridJ-3600-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccessen_EN
rcaap.typearticleen_EN
relation.isAuthorOfPublication3af07ffe-f914-48ba-a5d5-efcf70fdce01
relation.isAuthorOfPublicationbd0d1537-2e03-41fb-b27a-140af9c35db8
relation.isAuthorOfPublication.latestForDiscoverybd0d1537-2e03-41fb-b27a-140af9c35db8
relation.isProjectOfPublication7a4904dd-decb-473e-8df3-4901a9ab4d08
relation.isProjectOfPublication.latestForDiscovery7a4904dd-decb-473e-8df3-4901a9ab4d08

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