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Specific permeability of wood to water part 1 / Juha-Pekka Pokki in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2144–2154 Titre : Specific permeability of wood to water part 1 : longitudinal specific permeability of steamed, impregnated, and kraft-cooked wood Type de document : texte imprimé Auteurs : Juha-Pekka Pokki, Auteur ; Ville V. Laakso, Auteur ; Panu Tikka, Auteur Année de publication : 2010 Article en page(s) : pp. 2144–2154 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Permeability  of  wood  to  water Résumé : Two apparatuses for measuring the specific permeability of wood specimens are presented. The developed method was used to measure specific permeability to water in the longitudinal direction (of the log) for three wood species, pine (Pinus sylvestris), birch (Betula pendula), and eucalyptus (Eucalyptus grandis). The wood species were cooked to a certain degree under kraft cooking conditions. The effect of pretreatments on the specific permeability of uncooked wood was also studied. These pretreatments include boiling in water, steaming, and impregnation with cooking liquor. Wood species were cooked to a certain degree with an H factor of up to 600 for pine, 376 for birch, and 400 for eucalyptus. The average specific permeabilities to water ranged from 1 × 10−13 to 3 × 10−12 m3/m for cooked pine, from 1 × 10−13 to 1 × 10−12 m3/m for cooked birch, and from 3 × 10−11 to 5 × 10−11 m3/m for cooked eucalyptus. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801901f [article] Specific permeability of wood to water part 1 : longitudinal specific permeability of steamed, impregnated, and kraft-cooked wood [texte imprimé] / Juha-Pekka Pokki, Auteur ; Ville V. Laakso, Auteur ; Panu Tikka, Auteur . - 2010 . - pp. 2144–2154. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2144–2154 Mots-clés : Permeability  of  wood  to  water Résumé : Two apparatuses for measuring the specific permeability of wood specimens are presented. The developed method was used to measure specific permeability to water in the longitudinal direction (of the log) for three wood species, pine (Pinus sylvestris), birch (Betula pendula), and eucalyptus (Eucalyptus grandis). The wood species were cooked to a certain degree under kraft cooking conditions. The effect of pretreatments on the specific permeability of uncooked wood was also studied. These pretreatments include boiling in water, steaming, and impregnation with cooking liquor. Wood species were cooked to a certain degree with an H factor of up to 600 for pine, 376 for birch, and 400 for eucalyptus. The average specific permeabilities to water ranged from 1 × 10−13 to 3 × 10−12 m3/m for cooked pine, from 1 × 10−13 to 1 × 10−12 m3/m for cooked birch, and from 3 × 10−11 to 5 × 10−11 m3/m for cooked eucalyptus. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801901f

Specific permeability of wood to water part 2 / Juha-Pekka Pokki in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2155–2160 Titre : Specific permeability of wood to water part 2 : perpendicular specific permeability of steamed, impregnated, and kraft-cooked wood Type de document : texte imprimé Auteurs : Juha-Pekka Pokki, Auteur ; Ville V. Laakso, Auteur ; Panu Tikka, Auteur Année de publication : 2010 Article en page(s) : pp. 2155–2160 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Permeability  of  wood  to  water Résumé : A method for measuring the perpendicular specific permeability of wood specimens to water is presented, which is a modification of the method presented in part 1 of this work. The specific permeability in the perpendicular direction of the log of three wood species, pine (Pinus sylvestris), birch (Betula pendula), and eucalyptus (Eucalyptus grandis), was measured from kraft-cooked wood of different cooking degrees. The effect of various forms of pretreatment on the specific permeability of uncooked wood to water was also studied, including steaming with and without cooking liquor impregnation and boiling in water. Wood pieces were cooked to a certain degree with an H factor of up to 600 for pine, up to 300 for birch, and up to 250 for eucalyptus. The average specific permeability of cooked pine ranged from 2 × 10−15 to 3.5 × 10−14 m3/m, that of cooked birch ranged from 1.7 × 10−15 to 8 × 10−14 m3/m, and that of cooked eucalyptus ranged from 2 × 10−15 to 3.5 × 10−14 m3/m. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801902b [article] Specific permeability of wood to water part 2 : perpendicular specific permeability of steamed, impregnated, and kraft-cooked wood [texte imprimé] / Juha-Pekka Pokki, Auteur ; Ville V. Laakso, Auteur ; Panu Tikka, Auteur . - 2010 . - pp. 2155–2160. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2155–2160 Mots-clés : Permeability  of  wood  to  water Résumé : A method for measuring the perpendicular specific permeability of wood specimens to water is presented, which is a modification of the method presented in part 1 of this work. The specific permeability in the perpendicular direction of the log of three wood species, pine (Pinus sylvestris), birch (Betula pendula), and eucalyptus (Eucalyptus grandis), was measured from kraft-cooked wood of different cooking degrees. The effect of various forms of pretreatment on the specific permeability of uncooked wood to water was also studied, including steaming with and without cooking liquor impregnation and boiling in water. Wood pieces were cooked to a certain degree with an H factor of up to 600 for pine, up to 300 for birch, and up to 250 for eucalyptus. The average specific permeability of cooked pine ranged from 2 × 10−15 to 3.5 × 10−14 m3/m, that of cooked birch ranged from 1.7 × 10−15 to 8 × 10−14 m3/m, and that of cooked eucalyptus ranged from 2 × 10−15 to 3.5 × 10−14 m3/m. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801902b