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Potential contribution of organosilicon compounds to reduced leaching of biocides in wood protection

Contribution potentielle des composes à base d’organosilicone pour réduire le lessivage de biocides dans le domaine de la protection du bois

Annals of Forest Science volume 66, page 209 (2009)Cite this article

Abstract

  • • Leaching of biocide treated wood leads to reduced effectiveness and potential threat to the environment.

  • • Therefore the effectiveness of organosilicons as protective systems of biocides was evaluated. Scots pine sapwood specimens were impregnated with solely organosilicons and biocides as well as with combinations of both.

  • • The biocides 3-iodo-2-propynylbutylcarbamate, propiconazole and 3-(trimethoxysilyl)propyldimethyloctadecyl ammonium chloride confirmed their effectiveness regardless the addition of an organosilicon. Low leachate toxicities to the crustacean Daphnia magna were found for the organosilicons, whereas significant leachate toxicities were measured for the biocides. Combining both did not considerably diminish the leachate toxicities.

  • • It must therefore be concluded that under the circumstances as described in this article, organosilicons do not interfere with the efficacy of the biocides, but they do not contribute to a reduced leaching of the biocides either.

Résumé

  • • Le lessivage de bois traité avec des biocides conduit à une perte d’efficacité du traitement et à une menace pour l’environnement.

  • • Nous avons donc évalué l’efficacité des organosilicones en tant que systèmes de protection des biocides. Des échantillons d’aubier de pin sylvestre ont été imprégnés selon trois modalités (i) avec uniquement des organosilicones, (ii) avec des biocides et (iii) avec une combinaison des deux.

  • • Les biocides 3-iodo-2-propynylbutylcarbamate, propiconazole et 3-(trimethoxysilyl) propyldimethyloctadecyl chlorure d’ammonium ont confirmé leur efficacité quelle que soit l’organosilicone ajouté. Pour les traitements à base d’organosilicone, nous avons trouvé une faible toxicité des lixiviats (pour Daphnia magna) et une toxicité significative dans le cas des biocides seuls.

  • • On peut conclure que dans les conditions expérimentales présentées les organosilicones n’interfèrent pas avec l’efficacité des biocides mais ils ne contribuent pas à une réduction de la lixiviation des biocides.

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Authors and Affiliations

  1. Faculty of Bioscience Engineering, Laboratory of Wood Technology, Ghent University, Coupure Links 653, 9000, Gent, Belgium

    Liesbeth De Vetter, Marc Stevens & Joris Van Acker

  2. Faculty of Bioscience Engineering, Laboratory of Environmental Toxicology and Aquatic Ecology, Research Group Environmental Toxicology, Ghent University, J. Plateaustraat 22, 9000, Gent, Belgium

    Griet Depraetere & Colin Janssen

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  1. Liesbeth De Vetter
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  2. Griet Depraetere
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  4. Colin Janssen
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Correspondence to Liesbeth De Vetter.

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De Vetter, L., Depraetere, G., Stevens, M. et al. Potential contribution of organosilicon compounds to reduced leaching of biocides in wood protection. Ann. For. Sci. 66, 209 (2009). https://doi.org/10.1051/forest/2008091

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  • DOI: https://doi.org/10.1051/forest/2008091

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Annals of Forest Science

ISSN: 1297-966X