Solubilisation and chemical fixation of copper(ii) in micronized copper treated wood

2016 ◽  
Vol 45 (9) ◽  
pp. 3679-3686 ◽  
Author(s):  
Wei Xue ◽  
John N. R. Ruddick ◽  
Pierre Kennepohl
Keyword(s):  
Active Ingredient ◽  
Treated Wood ◽  
Chemical Fixation ◽  
Wood Preservatives ◽  
Particulate Copper ◽  
The Usa ◽  
Intrinsic Solubility

Wood preservatives using micronized particulate copper as the main active ingredient recently introduced in the USA have generated controversies due to their limited intrinsic solubility compared to the conventional soluble copper treatments.

Performance of waterborne copper/organic wood preservatives in an AWPA E14 soft-rot laboratory soil bed test using modified soil

Holzforschung ◽  
2017 ◽  
Vol 71 (9) ◽  
pp. 759-763 ◽  
Author(s):  
Darrel Nicholas
Keyword(s):  
Treated Wood ◽  
Soft Rot ◽  
Major Effect ◽  
White Rot ◽  
Equivalent Efficacy ◽  
Particulate Copper ◽  
Neutral Soil ◽  
Commercial Copper ◽  
Organic Formulations ◽  
Better Than

AbstractSoil chemistry is known to have a major effect on the degradation of treated wood by basidiomycete fungi in laboratory and exterior ground-contact exposures. However, this topic received little attention from a soft-rot (SR) decay perspective. In the present paper, laboratory SR tests were performed with two different types of forest soils, which were also modified. Test samples, made ofPinus glabra(Walt.) (pine) were treated with four commercial copper/organic waterborne preservatives. In addition, soluble or particulate copper and the organic co-biocides quarternary ammonia compound or tebuconazole, were individually examined. After 19 months of soil bed exposure, moderate to severe degradation was observed in all treated samples in both soils. Surprisingly, microscopic examination showed minimal SR decay. Samples in the neutral soil had extensive tunneling bacterial deterioration and the best performance was observed with both copper/quaternary commercial formulations. Samples in the acidic soil appeared to have some white-rot and bacterial deterioration and all four commercial copper/organic formulations showed good statistically equivalent efficacy. For samples treated with only copper, the particulate copper samples performed statistically equivalent or slightly better than amine copper, while samples treated with only the organic quarternary or tebuconazole performed poorly in both soils.

Evolving consumer preferences for residential decking materials

2006 ◽  
Vol 82 (2) ◽  
pp. 253-258 ◽  
Author(s):  
David R Fell ◽  
Jon Thomas ◽  
Eric Hansen
Keyword(s):  
Conjoint Analysis ◽  
Consumer Preferences ◽  
Treated Wood ◽  
Consumer Perceptions ◽  
Wood Preservatives ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Time Periods ◽  
Market Driven ◽  
Phase Out

Major changes are taking place in the residential decking market driven by concerns over wood preservatives and the resulting phase-out of chromated copper arsenic (CCA)-treated wood and recent entry into the marketplace by wood-plastic composites. Using conjoint analysis, this study explores consumer perceptions regarding residential decking materials over two time periods, 2000 and 2003. Type of material and lifetime were the most important decking attributes. Of lesser importance were annual maintenance and price. Major changes took place over the three-year study period with respect to opinions towards treated wood and wood-plastic composites. Consumers became much more negative towards treated wood and wood-plastic composites received nearly equivalent gains. The CCA controversy clearly had an impact in the marketplace and we demonstrate the usefulness of conjoint analysis in capturing this change. Key words: decking, consumer, conjoint analysis, plastic lumber, treated wood, cedar, substitution

scholarly journals AKTIVITAS FUNGISIDA BAHAN PENGAWET KAYU BERBAHAN AKTIF MAJEMUK TERHADAP JAMUR BIRU Diplodia sp

2017 ◽  
Vol 3 (2) ◽  
pp. 146 ◽  
Author(s):  
Agus Ismanto ◽  
Dominicus Martono
Keyword(s):  
Active Ingredient ◽  
Potato Dextrose Agar ◽  
Wood Preservatives ◽  
Inhibition Rate ◽  
Active Ingredients ◽  
Rate Of Growth ◽  
The Media ◽  
Fungicide Activity

Fungicide Activity of Complex-Active Ingredient of Preservative Wood  Against Bluestain of Diplodia sp.         Wood preservatives containing chlorotalonyl 450 g/L and carbendazim 100 g/L (Entiblu 450/100SC) was a pesticide compound serves to prevent fungal attacks Diplodia sp on the media of PDA (Potato Dextrose Agars) and to prevent germination of the spores. Inhibition of the rate and intensity of Diplodia sp fungus attacks on the media in petridish indicated a slowing rate of growth of the mycelium. The results showed that the pesticides containing chlorotalonyl 450 g/L and carbendazim 100 g/L with a concentration of 2 x 1.5 kg/ m³ could prevent the growth of the mycelium of Diplodia sp, inhibition rate reached 100%. For single ingredient chlorotalonyl 75 % (Chlorotalonil 75 WP) a concentration of ½ x 0.375 kg/m³ had been able to prevent the growth of the mycelium up to 100 %, while in carbendazim 50 % (Carbendazim 50 WP) to reached 100 % inhibition at a concentration of 1 x  0.75 kg/m³. Pesticides which was a mixture of active ingredients chlorotalonyl 450 g/L and carbendazim 100 g/L  no antagonism activity.Keywords : fungicide, complex active ingredient, bluestain of Diplodia sp, chlorotalonyl, carbendazim ABSTRAK           Bahan pengawet  kayu yang mengandung klorotalonil 450 g/L dan karbendasim 100 g/L  (Entiblu 450/100SC) merupakan pestisida majemuk berfungsi untuk mencegah serangan jamur Diplodia sp pada media agar PDA (Potato Dextrose Agar) dan mencegah perkecambahan spora. Penghambatan laju dan intensitas serangan jamur Diplodia sp pada media dalam cawan petri ditunjukkan  pelambatan kecepatan pertumbuhan miselium.  Hasil pengujian  menunjukkan bahwa pada pestisida yang mengandung klorotalonil 450 g/L dan karbendasim 100 g/L  dengan konsentrasi 2 x 1,5 kg/m³ dapat mencegah pertumbuhan miselium Diplodia sp , tingkat penghambatan mencapai 100 %. Untuk bahan tunggal klorotalonil 75 %  (Chlorotalonil 75WP) pada konsentrasi ½ x 0,375 kg/m³ telah mampu mencegah pertumbuhan miselium  sampai 100 %, sedangkan pada karbendasim 50 % (Carbendazim 50 WP) untuk mencapai penghambatan 100 % baru pada konsentrasi 1 x 0,75 kg/m³. Pestisida yang merupakan campuran bahan aktif klorotalonil 450 g/L dan karbendasim 100 g/L tidak ada aktivitas antagonisme.Kata kunci : fungisida, bahan aktif majemuk, jamur biru Diplodia sp, klorotalonil, karbendasim

scholarly journals Chemical, Biological and Mechanical Characterization of Wood Treated with Propolis Extract and Silicon Compounds

Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 907
Author(s):  
Magdalena Woźniak ◽  
Patrycja Kwaśniewska-Sip ◽  
Michał Krueger ◽  
Edward Roszyk ◽  
Izabela Ratajczak
Keyword(s):  
Bending Strength ◽  
Treated Wood ◽  
Untreated Wood ◽  
Brown Rot ◽  
Tetraethyl Orthosilicate ◽  
Wood Preservatives ◽  
Green Wood ◽  
Silicon Compounds ◽  
Propolis Extract ◽  
Before And After

The development of new bio-friendly alternatives for wood conservation is of great interest and necessary for environmental protection. In this paper, the preparations based on the propolis extract and silicon compounds were used as green wood preservatives. The wood was treated with 15% propolis extract (EEP) and two propolis-silane preparations, namely, EEP-VTMOS/TEOS (EEP with vinyltrimethoxysilane and tetraethyl orthosilicate) and EEP-MPTMOS/TEOS (EEP with 3-(trimethoxysilyl) propyl methacrylate and tetraethyl orthosilicate). The aim of the research was to determine the properties of treated wood, which was characterized by Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), atomic absorption spectroscopy (AAS), X-ray fluorescence (XRF), and scanning electron microscopy (SEM). Moreover, the resistance against brown-rot fungus Coniophora puteana and the mechanical properties of treated wood were also determined. The analysis of phenolic compounds concentration in treated wood indicated that phenols were in greater extent leached from wood treated with the propolis extract than from wood impregnated with the propolis-silane preparations. The presence of silicon in treated wood both before and after leaching was confirmed by CP MAS NMR measurements. In turn, AAS and XRF analyses indicated that the degree of Si leaching from wood impregnated with EEP-VTMOS/TEOS was approximately two times lower than from EEP-MPTMOS/TEOS treated wood. The results of chemical analyses confirmed that the constituents of the propolis-silane preparations formed permanent bonds with wood. In turn, the results of the antifungal efficacy against C. puteana showed that the propolis extract and the propolis-silane preparations limited the fungus activity, even the wood was subjected to leaching procedure. The treated wood showed an increase in bending strength and a decrease in the modulus of elasticity compared to untreated wood. The obtained results indicate that the propolis-silane preparations can be promising green wood preservatives, harmless for the natural environment.

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