Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

Autor:	Marko Petrič, Franc Budija, Miha Humar, Boštjan Lesar, David Hrastnik
Jazyk:	angličtina
Rok vydání:	2011
Předmět:	Wood waste Preservative Biocide Fungal attack Forestry SD1-669.5 Pulp and paper industry liquefied wood chemistry.chemical_compound leaching chemistry Hazardous waste copper Leaching (metallurgy) Chromated copper arsenate Copper leaching CCB wood preservation wood decay fungi
Zdroj:	Drvna Industrija, Vol 62, Iss 3, Pp 213-218 (2011)
ISSN:	1847-1153 0012-6772
Popis:	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 classifi ed 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 liquefi ed 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 liquefi ed 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 signifi cantly reduced. Thus, there are indications that the liquefi ed wood could be utilized as a binding agent for inorganic biocides.
Databáze:	OpenAIRE
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