Published Date
September 2011
Source
Wood Industry / Drvna Industrija;2011, Vol. 62 Issue 3, p213
Author
Humar, Miha; Budija, Franc; Hrastnik, David; Lesar, Boštjan; Petrič, Marko
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 possibility, spruce and beech wood was impregnated with liquefied CCB treated and untreaded spruce wood of various concentrations and exposed to wood decay fungi according to the EN 113 procedure. In parallel, 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 liquefied CCB treated wood was significantly reduced. Thus, there are indications that the liquefied wood could be utilized as a binding agent for inorganic biocides.
For further details log on website :
http://connection.ebscohost.com/c/articles/67097434/potentials-liquefied-ccb-treated-waste-wood-wood-preservation
September 2011
Source
Wood Industry / Drvna Industrija;2011, Vol. 62 Issue 3, p213
Author
Humar, Miha; Budija, Franc; Hrastnik, David; Lesar, Boštjan; Petrič, Marko
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 possibility, spruce and beech wood was impregnated with liquefied CCB treated and untreaded spruce wood of various concentrations and exposed to wood decay fungi according to the EN 113 procedure. In parallel, 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 liquefied CCB treated wood was significantly reduced. Thus, there are indications that the liquefied wood could be utilized as a binding agent for inorganic biocides.
For further details log on website :
http://connection.ebscohost.com/c/articles/67097434/potentials-liquefied-ccb-treated-waste-wood-wood-preservation
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