Leaching of boron from wood impregnated with preservative solutions based on boric acid and liquefied wood

Lesar, Boštjan; Budija, Franc; Kralj, Polonca; Petrič, Marko; Humar, Miha

doi:10.1007/s00107-011-0530-6

Cited by 9 publications

(7 citation statements)

References 3 publications

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“…This might be somehow related to the fact that liquefi ed CCB treated wood was made of spruce wood. Similar results were observed with the leached beech and spruce wood blocks, impregnated with the aqueous solutions of boric acid and liquefi ed spruce wood (Lesar et al, 2011). This presumption needs to be addressed in future studies.…”

Section: Rezultati I Raspravasupporting

confidence: 69%

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

et al. 2011

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Section: Rezultati I Raspravasupporting

confidence: 69%

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

et al. 2011

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“…Therefore, several fixation systems to limit or decrease boron leachability from treated wood have been developed. For example a combination of boron with: glycerol/glyoxal, vinyl monomers, silanes, alkydes, tall oil derivates, protein, water repellent compound, liquefied wood, and montan wax emulsions (Köse et al, 2011;Obanda et al, 2008;Lesar et al, 2009Lesar et al, , 2012Sen et al, 2009;Temiz et al, 2008;Tomak et al, 2011). However, due to the high costs or a two-step treatment, the above-mentioned approach could have not been deployed in practice.…”

Section: Introductionmentioning

confidence: 99%

Effects of Rosin Sizing Agent on the Fixation of Boron in <i>Styrax tonkinensis</i> Wood

Nguyen¹,

2017

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Abstract:The aim of this study was to evaluate the effect of rosin upon fixing boron in Styrax tonkinensis (Piere) wood treated with mixtures of 3% boric acid and 1% rosin sizing agent. After treatment, wood samples were also analyzed by scanning electron microscope observation and energy-dispersive X-ray spectroscopy (SEM-EDX). The results showed that all boron-rosin formulations impregnated Styrax tonkinensis wood evenly penetrated into the wood blocks. Boron-rosin treatment decreased by 16% the amount of boron leaching from treated wood samples compared with those from the samples treated with boric acid alone. The SEM-EDX analysis proved that the boron element was still in the cell lumens of leached wood blocks. Results indicated that rosin emulsion sizing agent can have an effect on the fixation of boron in wood. This signifies that using of rosin as fixing agents may contribute to lead to wood treated with boron based preservatives being more widely used.

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“…The aim of this study was continuation of investigations of Humar et al (2011) in order to optimise liquefaction of CCB containing wood with ethylene glycol (EG). We also wanted to clarify possible fungicidal properties of liquefied and of CCB containing liquefied wood, especially as the liquefied wood proved to be an effective binder for boron based preservative compounds (Lesar et al 2012). To simplify the experiments, sawdust of black poplar wood was treated with commercial CCB formulations and afterwards liquefied, instead of Norway spruce wood that was used in our previous research (Humar et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Influence of Liquefied and CCB Containing Liquefied Wood on Growth of Wood Decay Fungi

Hrastnik

Budija

Humar

et al. 2013

Maderas, Cienc. tecnol.

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There are high amounts of post-consumed protected waste wood removed from service every year. The residual biocides, including copper, chromium and boron from CCB (Cu, Cr, B) in post-consumed wood that was protected with biocides may cause environmental problems during waste management, for example during land filling. Therefore, the aim of this study was to find out if Cu and Cr in the processed waste wood, previously treated with CCB, can be re-used as a wood preservative or in coatings made of liquefied wood. Liquefaction of CCB containing waste wood could be as well the first step in the elimination process of metals. So, the optimal conditions for liquefaction of CCB (Cu, Cr and B) containing black poplar (Populus nigra L.) wood were established and compared with liquefaction of uncontaminated black poplar wood. The reactants for liquefaction of black poplar wood sawdust were ethylene glycol (EG) and sulphuric acid. It was observed that in the last stages of the liquefaction process, the presence of Cu, Cr and B did not have any influence on liquefaction yield (LY), while their influence was observed in first stages of the solvolytic reaction. Investigations of fungicidal properties of uncontaminated and CCB containing liquefied wood showed higher antifungal efficacy of liquefied wood without Cu, Cr and B than of liquefied wood that contained CCB. In the tested concentration range, the presence of Cu even promoted the growth of selected wood decay fungi. One of the reasons for higher toxicity of liquefied black poplar sawdust without Cu, Cr and B, was its very low pH value.

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Leaching of boron from wood impregnated with preservative solutions based on boric acid and liquefied wood

Cited by 9 publications

References 3 publications

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

Effects of Rosin Sizing Agent on the Fixation of Boron in <i>Styrax tonkinensis</i> Wood

Influence of Liquefied and CCB Containing Liquefied Wood on Growth of Wood Decay Fungi

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Leaching of boron from wood impregnated with preservative solutions based on boric acid and liquefied wood

Cited by 9 publications

References 3 publications

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

Potentials of Liquefied CCB Treated Waste Wood for Wood Preservation

Effects of Rosin Sizing Agent on the Fixation of Boron in &lt;i&gt;Styrax tonkinensis&lt;/i&gt; Wood

Influence of Liquefied and CCB Containing Liquefied Wood on Growth of Wood Decay Fungi

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Effects of Rosin Sizing Agent on the Fixation of Boron in <i>Styrax tonkinensis</i> Wood