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Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

2022Journal article Open access
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dc.contributor.authorLourenço, Ana
dc.contributor.authorKukic, Dragana
dc.contributor.authorVasic, Vesna
dc.contributor.authorCosta, Ricardo A.
dc.contributor.authorAntov, Mirjana
dc.contributor.authorSciban, Marina
dc.contributor.authorGominho, Jorge
dc.date.accessioned2022-10-28T14:03:44Z
dc.date.available2022-10-28T14:03:44Z
dc.date.issued2022
dc.description.abstractThe main objective of this work was to assess Eucalyptus globulus lignin as an adsorbent and compare the results with kraft lignin, which has previously been demonstrated to be an effective adsorbent. Eucalypt lignin was extracted (by the dioxane technique), characterised, and its adsorption properties for Cr(VI) ions were evaluated. The monomeric composition of both types of lignin indicated a high content of guaiacyl (G) and syringyl (S) units but low content of p-hydroxyphenyl (H), with an H:G:S ratio of 1:50:146 (eucalypt lignin) and 1:16:26 (kraft lignin), as determined by Py-GC/MS. According to elemental analysis, sulphur (2%) and sodium (1%) were found in kraft lignin, but not in eucalypt lignin. The adsorption capacity of the eucalypt lignin was notably higher than the kraft lignin during the first 8 h, but practically all the ions had been absorbed by both the eucalypt and kraft lignin after 24 h (93.4% and 95%, respectively). Cr(VI) adsorption onto both lignins fitted well using the Langmuir adsorption isotherm model, with capacities of 256.4 and 303.0 mg/g, respectively, for eucalypt and kraft. The study’s overall results demonstrate the great potential of eucalypt lignin as a biosorbent for Cr(VI) removal from aqueous solutionspt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLourenço, A.; Kuki´c, D.; Vasi´c, V.; Costa, R.A.; Antov, M.; Š´ciban, M.; Gominho, J. Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI). Molecules 2022, 27, 6246pt_PT
dc.identifier.doihttps://doi.org/10.3390/ molecules27196246pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/25823
dc.language.isoengpt_PT
dc.publisherMDPIpt_PT
dc.relationForest Research Centre
dc.relationForest Research Centre
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEucalyptuspt_PT
dc.subjectkraft ligninpt_PT
dc.subjectchromiumpt_PT
dc.subjectanalytical pyrolysispt_PT
dc.subjectbiorefinerypt_PT
dc.titleValorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleForest Research Centre
oaire.awardTitleForest Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAGR%2F00239%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.citation.titleMoleculespt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameGominho
person.givenNameJorge
person.identifierc-OdG5gAAAAJ
person.identifier.ciencia-idE21C-1B36-77F6
person.identifier.orcid0000-0003-3419-6075
person.identifier.scopus-author-id57195915156
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoveryfe9fa41e-219f-4a80-8131-4cccb07c3a6a
relation.isProjectOfPublication6a9ac754-44c8-4fda-854c-879148c1ac4e
relation.isProjectOfPublication56bd0ae9-f8da-4344-b9a2-f633d4f68b89
relation.isProjectOfPublication.latestForDiscovery56bd0ae9-f8da-4344-b9a2-f633d4f68b89

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