Publication
Estimation of Acacia melanoxylon unbleached kraft pulp brightness by NIR spectroscopy
| dc.contributor.author | Santos, António J. | |
| dc.contributor.author | Anjos, O. | |
| dc.contributor.author | Pereira, Helena | |
| dc.date.accessioned | 2015-08-03T17:09:15Z | |
| dc.date.available | 2015-08-03T17:09:15Z | |
| dc.date.issued | 2015 | |
| dc.description | Research Communication. | por |
| dc.description.abstract | Aim 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). | por |
| dc.identifier.citation | SANTOS, A. ; ANJOS, O. ; PEREIRA, H. (2015) - Estimation of Acacia melanoxylon unbleached kraft pulp brightness by NIR spectroscopy. Forest Systems. ISSN 2171-9845. 24(2), eRC03, 6 pages. | por |
| dc.identifier.doi | 10.5424/fs/2015242-07580 | |
| dc.identifier.uri | http://hdl.handle.net/10400.11/2941 | |
| dc.language.iso | por | por |
| dc.peerreviewed | yes | por |
| dc.publisher | INIA | por |
| dc.relation.publisherversion | www.inia.es/Forestsystems | por |
| dc.subject | Acacia melanoxylon | por |
| dc.subject | Unbleached kraft pulps | por |
| dc.subject | ISO brightness | por |
| dc.subject | NIR | por |
| dc.subject | RPD | por |
| dc.title | Estimation of Acacia melanoxylon unbleached kraft pulp brightness by NIR spectroscopy | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.title | Forest Systems | por |
| oaire.citation.volume | 24(2), eRC03 | por |
| person.familyName | Anjos | |
| person.givenName | Ofélia | |
| person.identifier.ciencia-id | C21D-D8C7-3037 | |
| person.identifier.orcid | 0000-0003-0267-3252 | |
| person.identifier.rid | G-2808-2012 | |
| person.identifier.scopus-author-id | 23395659700 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | df9191ae-0bbb-4bb8-bbdc-0f79c7365876 | |
| relation.isAuthorOfPublication.latestForDiscovery | df9191ae-0bbb-4bb8-bbdc-0f79c7365876 |