Wood, as a building material of renewable origin, is highly valued and widely used for indoor and outdoor applications in many countries. For a better quality, wood is modified thermally at elevated temperatures, chemically as acetylation with acetic anhydride, furfurylation with furfural alcohol, using pressure methods, etc. (Bakar et al. 2013; Hannouz et al. 2015; Sidorova 2016). The main idea of this study was to develop environmentally friendly wood modification method for the improvement of physico-chemical and aesthetic wood properties. We followed the knowledge on “bog wood” transformations in the bog environment under anaerobic conditions (low oxygen), naturally lasting for hundreds to thousands of years. Previous findings showed that acidic environment, where iron salts and other minerals react with the tannins in the wood, change wood colour from dark brown to almost black and increase biological wood resistance to environmental impact. The simulation of a specific bog environment for wood eco-modification was hypothesised as a relatively short way to develop a sustainable product (Grosse et al. 2019). The aim of this study was to determinate the influence of hydrothermal treatment with Fe2O3and tannins on Fe concentration and content of total phenolic compounds of Pinus sylvestris L., Picea abies (L.) H. Karst., Pseudotsuga menziesii, Juglans Regia L. and Acer platanoides L. wood after different treatment time.
Keywords: wood modification, thermal modification, fe concentration, pinus sylvestris, picea abies.
Authors
M. Aleinikovas
B. Šilinskas
M. Škėma
I. Varnagirytė-Kabašinskienė
M. Pukalskienė
A.Baltrušaitis
L. Beniušienė
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