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Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy

Detalhes bibliográficos
Autor(a) principal: Santos, António J.A.
Data de Publicação: 2015
Outros Autores: Anjos, Ofélia, Pereira, Helena
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10400.5/9261
Resumo: Resource Communication
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spelling Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopyAcacia melanoxylonunbleached kraft pulpsISO brightnessNIRRPDResource CommunicationAim of the study: The ability of NIR spectroscopy for predicting the ISO brightness was studied on unbleached Kraft pulps of Acacia melanoxylon R. Br. Area of study: Sites covering littoral north, mid interior north and centre interior of Portugal. Materials and methods: The samples were Kraft pulped in standard identical conditions targeted to a kappa number of 15. A Near Infrared (NIR) partial least squares regression (PLSR) model was developed for the ISO brightness prediction using 75 pulp samples with a variation range of 18.9 to 47.9 %. Main results: Very good correlations between NIR spectra and ISO brightness were obtained. Ten methods were used for PLS analysis (cross validation with 48 samples), and a test set validation was made with 27 samples. The 1stDer pre-processed spectra coupling two wavenumber ranges from 9404 to 7498 cm-1 and 4605 to 4243 cm-1 allowed the best model with a root mean square error of ISO brightness prediction of 0.5 % (RMSEP), a r2 of 99.5 % with a RPD of 14.7. Research highlights: According to AACC Method 39-00, the present model is sufficiently accurate to be used for process control (RPD ≥ 8)FCT (PEst-OE/AGR/UI0239-2014)INIA (Es)Repositório da Universidade de LisboaSantos, António J.A.Anjos, OféliaPereira, Helena2015-09-24T14:53:34Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/9261engSantos, A.J.A., Anjos, O., Pereira, H. (2015). Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy. Forest Systems, Volume 24, Issue 2, eRC03, 6 pageshttp://dx.doi.org/10.5424/fs/2015242-07580info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T15:57:59Zoai:repositorio.ulisboa.pt:10400.5/9261Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T03:58:58.125608Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
title Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
spellingShingle Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
Santos, António J.A.
Acacia melanoxylon
unbleached kraft pulps
ISO brightness
NIR
RPD
title_short Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
title_full Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
title_fullStr Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
title_full_unstemmed Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
title_sort Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy
author Santos, António J.A.
author_facet Santos, António J.A.
Anjos, Ofélia
Pereira, Helena
author_role author
author2 Anjos, Ofélia
Pereira, Helena
author2_role author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Santos, António J.A.
Anjos, Ofélia
Pereira, Helena
dc.subject.por.fl_str_mv Acacia melanoxylon
unbleached kraft pulps
ISO brightness
NIR
RPD
topic Acacia melanoxylon
unbleached kraft pulps
ISO brightness
NIR
RPD
description Resource Communication
publishDate 2015
dc.date.none.fl_str_mv 2015-09-24T14:53:34Z
2015
2015-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/9261
url http://hdl.handle.net/10400.5/9261
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Santos, A.J.A., Anjos, O., Pereira, H. (2015). Estimation of Acacia melanoxylon unbleached Kraft pulp brightness by NIR spectroscopy. Forest Systems, Volume 24, Issue 2, eRC03, 6 pages
http://dx.doi.org/10.5424/fs/2015242-07580
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv INIA (Es)
publisher.none.fl_str_mv INIA (Es)
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833601899937398784

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