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Heat-treated wood as chromium adsorption material

2017Journal article Restricted access
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dc.contributor.authorEsteves, Bruno
dc.contributor.authorCruz-Lopes, Luísa
dc.contributor.authorFigueirinha, Artur
dc.contributor.authorde Lemos, Luis Teixeira
dc.contributor.authorFerreira, José
dc.contributor.authorPereira, Helena
dc.contributor.authorDomingos, Idalina
dc.date.accessioned2017-06-20T15:37:58Z
dc.date.available2017-06-20T15:37:58Z
dc.date.issued2017
dc.description.abstractHeavy metals adsorption with lignocellulosic materials has been heavily researched in the last years. Since heat activation has been used with good results to increase the adsorption capacity of some materials, heat-treated wood might be a better adsorbent. This hypothesis is the basis of the present study. The adsorption tests were made with powdered pine wood, heat-treated at 190–210 °C. All the heat-treated samples showed a significantly higher adsorption compared to untreated wood. The maximum adsorption was obtained at pH 3 for heat-treated wood at 210 °C. The kinetics of the adsorption process fitted a pseudo-second-order reaction (R2 0.990–0.996). Adsorption fitted well both the Langmuir and the Freundlich model, but the Freundlich model presented higher R2 (0.988–0.998). The qmax values estimated by the Langmuir plotting were in the range 15.6–19.4 mg/g and the n values from Freundlich isotherms between 1.87 and 2.39. Heat-treated wood was a better adsorption material than untreated wood for chromium adsorption. This can be a good application for the sawdust produced by the processing of heat-treated wood at primary and secondary wood processing mills or for the recycling of heat-treated wood at the end of product life.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEsteves, B., Cruz-Lopes, L., Figueirinha, A., Lemos, L. T. de, Ferreira, J., Pereira, H., & Domingos, I. (2017). Heat-treated wood as chromium adsorption material. European Journal of Wood and Wood Products. https://doi.org/10.1007/s00107-017-1181-zpt_PT
dc.identifier.doi10.1007/s00107-017-1181-zpt_PT
dc.identifier.issn0018-3768
dc.identifier.urihttp://hdl.handle.net/10400.19/4616
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Verlagpt_PT
dc.relation.publisherversionhttps://link.springer.com/article/10.1007%2Fs00107-017-1181-zpt_PT
dc.titleHeat-treated wood as chromium adsorption materialpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage7pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleEuropean Journal of Wood and Wood Productspt_PT
person.familyNameEsteves
person.familyNameGonçalves Oliveira Valente da Cruz-Lopes
person.familyNameFerreira
person.familyNameDomingos
person.givenNameBruno
person.givenNameLuísa Paula
person.givenNameJosé
person.givenNameidalina
person.identifier2119255
person.identifier.ciencia-id521B-63A7-B248
person.identifier.ciencia-id7916-0833-5B38
person.identifier.ciencia-idB81E-BE45-E128
person.identifier.ciencia-id7116-E1DE-88E7
person.identifier.orcid0000-0001-6660-3128
person.identifier.orcid0000-0001-6502-7202
person.identifier.orcid0000-0001-7596-8065
person.identifier.orcid0000-0002-4308-1563
person.identifier.ridC-2173-2012
person.identifier.scopus-author-id57202554441
person.identifier.scopus-author-id18133647300
person.identifier.scopus-author-id24281086400
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa3351493-41e8-4758-acae-39e3382d0b04
relation.isAuthorOfPublicationfa1274f5-f7f8-4afd-8ed8-5f988d6c7226
relation.isAuthorOfPublication7d09c228-3415-4272-9299-89c6951565d7
relation.isAuthorOfPublication50134ab7-55eb-4e8a-a5ea-5cc54b1468e3
relation.isAuthorOfPublication.latestForDiscoverya3351493-41e8-4758-acae-39e3382d0b04

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