Simple item page
 

Initial Desorption of Reaction Beech Wood

cris.virtual.author-orcid0000-0002-6713-8077
cris.virtual.author-orcid0000-0003-0076-3190
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0003-3028-5134
cris.virtualsource.author-orcid5ad889ad-842c-4ab2-9a0e-ea77e6f75f9c
cris.virtualsource.author-orcidbe4662f0-4144-45b2-96f7-33f2859e6d5e
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid0e9d858b-df05-406c-b66c-8c6566bab2d1
dc.abstract.enThe research aimed to obtain empirical data for modeling the initial desorption in reaction wood from the cross-section of the green beech (Fagus sylvatica L.) log. Firstly, we analyzed the chemical composition, macro and microscopic structure of tension and opposite wood tissue. Then, the Equilibrium Moisture Content (EMC) was measured by the Dynamic Vapor Sorption method during the initial desorption. The used air parameters were specific for the mild drying schedule of green beech timber (t = 20, 35, and 50 °C, Relative Humidity (RH) ranging from 95 to 0 %). Relationships between the EMC of reaction wood and drying parameters were modeled using the Response Surface Method (RSM). The tests revealed: different hygroscopic properties of tension and opposite wood, the dependence of EMC value on temperature, and differences between EMC values for initial (first) and second desorption. Moreover, it was confirmed that, during initial desorption, the EMCs of reaction wood are significantly higher than reference EMC data. The differences in the EMC value are up to 0.14 kg/kg (for air with RH above 90 %). The presented polynomial model of the initial desorption of reaction beech wood can improve drying schedules for beech sawn timber with a high amount of reaction tissue.
dc.abstract.languagehr
dc.abstract.otherCilj je ovog istraživanja modeliranje inicijalne desorpcije poprečnog presjeka reakcijskog drva bukve (Fagus sylvatica L.) na temelju empirijskih podatka. Najprije je istražen kemijski sastav drva te je analizirana makroskopska i mikroskopska struktura reakcijskoga i opozitnog drva. Zatim je metodom dinamičke sorpcije pare izmjeren ravnotežni sadržaj vode tijekom inicijalne desorpcije. Drvo je podvrgnuto blagom režimu sušenja (t = 20, 35 i 50 °C, te relativnoj vlažnosti zraka u rasponu od 95 do 0 %). Odnosi između ravnotežnog sadržaja vode reakcijskog drva i parametara sušenja modelirani su metodom odzivne površine. Ispitivanjem su dobivena različita higroskopska svojstva reakcijskoga i normalnog drva, ovisnost ravnotežnog sadržaja vode o temperaturi sušenja te razlike između vrijednosti ravnotežnog sadržaja vode pri inicijalnoj (prvoj) i drugoj desorpciji. Također je potvrđeno da je ravnotežni sadržaj vode reakcijskog drva tijekom inicijalne desorpcije znatno veći od referentnih vrijednosti ravnotežnog sadržaja vode normalnog drva. Razlike u vrijednostima ravnotežnog sadržaja vode kreću se do 0,14 kg/kg (pri relativnoj vlažnosti zraka većoj od 90 %). Prikazani polinomski model inicijalne desorpcije reakcijskog drva bukve može poslužiti za poboljšanje režima sušenja bukove piljene građe s velikim udjelom reakcijskog drva.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Nauki o Drewnie i Techniki Cieplnej
dc.affiliation.instituteKatedra Obrabiarek i Podstaw Konstrukcji Maszyn
dc.affiliation.instituteKatedra Chemicznej Technologii Drewna
dc.contributor.authorMajka, Jerzy
dc.contributor.authorSydor, Maciej
dc.contributor.authorPrentki, Jakub
dc.contributor.authorZborowska, Magdalena
dc.date.access2026-02-04
dc.date.accessioned2026-02-20T08:55:32Z
dc.date.available2026-02-20T08:55:32Z
dc.date.copyright2022-07-15
dc.date.issued2022
dc.description.abstract<jats:p>The research aimed to obtain empirical data for modeling the initial desorption in reaction wood from the cross-section of the green beech (Fagus sylvatica L.) log. Firstly, we analyzed the chemical composition, macro and microscopic structure of tension and opposite wood tissue. Then, the Equilibrium Moisture Content (EMC) was measured by the Dynamic Vapor Sorption method during the initial desorption. The used air parameters were specific for the mild drying schedule of green beech timber (t = 20, 35, and 50 °C, Relative Humidity (RH) ranging from 95 to 0 %). Relationships between the EMC of reaction wood and drying parameters were modeled using the Response Surface Method (RSM). The tests revealed: different hygroscopic properties of tension and opposite wood, the dependence of EMC value on temperature, and differences between EMC values for initial (first) and second desorption. Moreover, it was confirmed that, during initial desorption, the EMCs of reaction wood are significantly higher than reference EMC data. The differences in the EMC value are up to 0.14 kg/kg (for air with RH above 90 %). The presented polynomial model of the initial desorption of reaction beech wood can improve drying schedules for beech sawn timber with a high amount of reaction tissue.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if1,1
dc.description.number3
dc.description.points40
dc.description.versionfinal_published
dc.description.volume73
dc.identifier.doi10.5552/drvind.2022.0021
dc.identifier.eissn1847-1153
dc.identifier.issn0012-6772
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7406
dc.identifier.weblinkhttps://hrcak.srce.hr/en/clanak/406550
dc.languageen
dc.language.otherhr
dc.relation.ispartofDrvna Industrija
dc.relation.pages299-308
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.enequilibrium moisture content
dc.subject.enkiln-drying
dc.subject.enresponse surface methodology
dc.subject.enFagus sylvatica L.
dc.subject.ensorption isotherms
dc.subject.enreaction wood
dc.subject.entension wood
dc.subject.enopposite wood
dc.subject.languagehr
dc.subject.otherravnotežni sadržaj vode
dc.subject.othersušenje u sušioniku
dc.subject.othermetoda odzivne površine
dc.subject.otherFagus sylvatica L.
dc.subject.othersorpcijske izoterme
dc.subject.otherreakcijsko drvo
dc.subject.othertenzijsko drvo
dc.subject.otheropozitno drvo
dc.titleInitial Desorption of Reaction Beech Wood
dc.title.alternativeInicijalna desorpcija reakcijskog drva bukovine
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume73