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Lignins as agents for bio-protection of wood

11th EWLP, Hamburg, Germany, August 16–19, 2010
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Published/Copyright: June 10, 2011
Holzforschung
From the journal Volume 65 Issue 4

Abstract

Pinewood was modified by vacuum impregnation with various aqueous lignin solutions of low concentration (0.5– 1.0%) and its decay resistance was tested by the standard procedure EN 113. Five lignin types were tested against three brown rot and one white rot fungi. The bio-durability of wood was considerably increased by the treatment. The highest effect of modification was for alkali, kraft, hydrolysis lignins and industrial lignosulfonate, when mass losses of wood for brown-rot fungi were negligible. The effect of the modification with certified lignosulfonates was insignificant. Chemical analysis revealed that phenols, which are leached from lignin and are adsorbed by wood in the impregnation process, could act as a biocide. The hydrophilic properties of wood either did not change (certified lignins) or were enhanced because of some change in the pore structure (industrial lignins). Further tests are needed to verify the positive effects of this technologically simple and environmentally friendly treatment.

Keywords: decay resistance; density; lignin; modification; phenols; pinewood; water sorption; wood rot
Corresponding author. Latvian State Institute of Wood Chemistry, 27 Dzerbenes Str., LV-1006, Riga, Latvia Phone: +371 67552 554 Fax: +371 67 550 635
Received: 2010-10-29
Accepted: 2011-4-7
Published Online: 2011-06-10
Published in Print: 2011-06-01

©2011 by Walter de Gruyter Berlin Boston

Articles in the same Issue

  1. Editorial
  2. EWLP 2010, 16th–19th August 2010, Hamburg, Germany
  3. Review
  4. Bio based fuels and fuel additives from lignocellulose feedstock via the production of levulinic acid and furfural
  5. Original Papers
  6. Optimization of steam pretreatment conditions for enzymatic hydrolysis of poplar wood
  7. Fungal pretreatment of pine wood to reduce the emission of volatile organic compounds
  8. Dilute acid pretreatment of starch-containing rice hulls for ethanol production
  9. Studies of the chemoenzymatic modification of cellulosic pulps by the laccase-TEMPO system
  10. Development of an integrated thermal and enzymatic hydrolysis for lignocellulosic biomass in fixed-bed reactors
  11. A larch based biorefinery: pre-extraction and extract fermentation to lactic acid
  12. Lignins as agents for bio-protection of wood
  13. Isolation and characterization of the phenolic fractions of wood pyrolytic oil
  14. Purification of Eucalyptus globulus water prehydrolyzates using the HiTAC process (high-temperature adsorption on activated charcoal)
  15. Disintegration and dissolution kinetics of wood chips in ionic liquids
  16. Ionic liquids as media for biomass processing: opportunities and restrictions
  17. Autohydrolysis of birch wood
  18. Solvent extraction as a means of preparing homogeneous lignin fractions
  19. Conditioning of SO2-ethanol-water spent liquor from spruce for the production of chemicals by ABE fermentation
  20. Total mass balances of SO2-ethanol-water (SEW) fractionation of forest biomass
  21. Lignin oxidation mechanisms under oxygen delignification conditions. Part 1. Results from direct analyses
  22. Lignin oxidation mechanisms under oxygen delignification conditions. Part 2: Advanced methods for the detailed characterization of lignin oxidation mechanisms
  23. Lignin oxidation mechanisms under oxygen delignification conditions. Part 3. Reaction pathways and modeling
  24. Simplified determination of total lignin content in kraft lignin samples and black liquors
  25. Xylan deposition onto eucalypt pulp fibers during oxygen delignification
  26. Dissolution of dissolving pulp in alkaline solvents after steam explosion pretreatments
  27. Structure and antioxidant activity of diarylheptanoids extracted from bark of grey alder (Alnus incana) and potential of biorefinery-based bark processing of European trees
  28. Short Note
  29. Binding affinities of different metal ions to unbleached hardwood kraft pulp
  30. Meetings
  31. Meetings
https://doi.org/10.1515/hf.2011.092
Keywords for this article
decay resistance; density; lignin; modification; phenols; pinewood; water sorption; wood rot

Articles in the same Issue

  1. Editorial
  2. EWLP 2010, 16th–19th August 2010, Hamburg, Germany
  3. Review
  4. Bio based fuels and fuel additives from lignocellulose feedstock via the production of levulinic acid and furfural
  5. Original Papers
  6. Optimization of steam pretreatment conditions for enzymatic hydrolysis of poplar wood
  7. Fungal pretreatment of pine wood to reduce the emission of volatile organic compounds
  8. Dilute acid pretreatment of starch-containing rice hulls for ethanol production
  9. Studies of the chemoenzymatic modification of cellulosic pulps by the laccase-TEMPO system
  10. Development of an integrated thermal and enzymatic hydrolysis for lignocellulosic biomass in fixed-bed reactors
  11. A larch based biorefinery: pre-extraction and extract fermentation to lactic acid
  12. Lignins as agents for bio-protection of wood
  13. Isolation and characterization of the phenolic fractions of wood pyrolytic oil
  14. Purification of Eucalyptus globulus water prehydrolyzates using the HiTAC process (high-temperature adsorption on activated charcoal)
  15. Disintegration and dissolution kinetics of wood chips in ionic liquids
  16. Ionic liquids as media for biomass processing: opportunities and restrictions
  17. Autohydrolysis of birch wood
  18. Solvent extraction as a means of preparing homogeneous lignin fractions
  19. Conditioning of SO2-ethanol-water spent liquor from spruce for the production of chemicals by ABE fermentation
  20. Total mass balances of SO2-ethanol-water (SEW) fractionation of forest biomass
  21. Lignin oxidation mechanisms under oxygen delignification conditions. Part 1. Results from direct analyses
  22. Lignin oxidation mechanisms under oxygen delignification conditions. Part 2: Advanced methods for the detailed characterization of lignin oxidation mechanisms
  23. Lignin oxidation mechanisms under oxygen delignification conditions. Part 3. Reaction pathways and modeling
  24. Simplified determination of total lignin content in kraft lignin samples and black liquors
  25. Xylan deposition onto eucalypt pulp fibers during oxygen delignification
  26. Dissolution of dissolving pulp in alkaline solvents after steam explosion pretreatments
  27. Structure and antioxidant activity of diarylheptanoids extracted from bark of grey alder (Alnus incana) and potential of biorefinery-based bark processing of European trees
  28. Short Note
  29. Binding affinities of different metal ions to unbleached hardwood kraft pulp
  30. Meetings
  31. Meetings
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