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- Title
Razpoložljivost virov taninov in ligninov za celostno zamenjavo sintetiènih lepil za les v evropskem prostoru.
- Authors
SARAŽIN, Jaša; POTOÈNIK, Igor; ŠERNEK, Milan
- Abstract
Saražin, J., Potoènik, I., Šernek, M.: Tannin and Lignin Sources Availability for the Holistic Replacement of Synthetic Wood Adhesives in the European Area; Gozdarski vestnik (Professional Journal of Forestry), 78/2020, vol 1. In Slovenian, abstract and summary in English, lit. quot. 18. Translated by Breda Misja, proofreading of the Slovenian text Marjetka Šivic. Global consumption of fossil fuels increases every year and thereby increases also the striving to replace them with renewable sources. Due to its composition, wood biomass can replace fossil fuels both in the field of energy sources and in the field of raw materials for production of diverse materials. It has been found out, that the use of wood biomass for the production of diverse materials makes more sense. Estimations have been done, that around five million tons of adhesives, most of them synthetic on the basis of formaldehyde, are produced in Europe for production of wood panels. Since they impose pressure on the environment and harm the health, environmentally appropriate alternatives represent a research item already for some decades. Tannins and lignins as the most abundant renewable sources of polyphenol compounds are appropriate for use in wood adhesives. The more reactive tannins are suitable for the main adhesive component and the lignins mostly for the additives to the adhesives. The goal of this article is therefore to answer to the following two hypotheses: Hypothesis 1 assumes that in Europe, there is enough of available tannin for production of adhesives with 90 % tannin share with regard to dry adhesive substance to satisfy the present European needs for synthetic adhesives. Hypothesis 2 assumes that in Europe, there is enough of available tannin and lignin for production of adhesives containing 45 % tannin and 45 % lignin to satisfy the present European needs for synthetic adhesives. Hypothesis 1 was rejected due to the estimation that only around 70 % of needs for synthetic adhesives could be covered with the available tannins. Hypothesis 2 was fully confirmed. If we exploited the tannins, at present mostly burned with the bark of European conifers, and lignins, burned as a side product of paper industry, for the production of bioadhesives, from the quantity viewpoint we could fully replace synthetic adhesives used at present.
- Subjects
EUROPE; TANNINS; PAPER products industry; RAW materials; BIOMASS production; FOSSIL fuels; LIGNINS; WOOD waste
- Publication
Gozdarski Vestnik, 2020, Vol 78, Issue 1, p23
- ISSN
0017-2723
- Publication type
Article