Original scientific paper

https://doi.org/10.5552/drind.2011.1110

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

Miha Humar ; University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia
Franc Budija ; University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia
David Hrastnik ; University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia
Boštjan Lesar orcid.org/0000-0003-3965-3458 ; University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia
Marko Petrič orcid.org/0000-0002-0283-7985 ; University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia

Abstract

Recovered wood is frequently contaminated with biocides and therefore its use is limited. Even more, wood, impregnated with classical chromated copper arsenate (CCA) preservatives is classified as a hazardous waste, therefore solutions for reuse or recovery of this material are sought. One of the options, discussed in this paper is liquefaction and further applications of liquefied wood containing biocide remainings. In order to elucidate this possibilty, spruce and beech wood was impregnated with liquefi ed CCB treated and untreaded spruce wood of various concentrations and exposed to wood decay fungi according to the EN 113 procedure. In paralel, the leaching experiments (ENV 1250-2) were performed as well. The results do not clearly show that liquefied wood is bio-inactive. In most cases the mass loss by fungal attack is decreased compared to the untreated controls. On the other hand, copper leaching from spruce wood, impregnated with the liquefi ed CCB treated wood was significantly reduced. Thus, there are indications that the liquefied wood could be utilized as a binding agent for inorganic biocides.

Keywords

liquefied wood; wood decay fungi; wood preservation; leaching; CCB; copper

Hrčak ID:

71799

URI

https://hrcak.srce.hr/71799

Publication date:

26.9.2011.

Article data in other languages: croatian

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