Your search resulted in 29 documents. Displaying 25 entries per page.
Biological performance of wood treated with tar-oil recovered during slow pyrolysis of macadamia nut shells
2010 - IRG/WP 10-30523
This study evaluated decay and termite resistance of wood treated with tar oil obtained from a commercial pyrolysis process of macadamia nut shells. Vacuum-treated pine wood specimens were subjected to various brown and white rot fungi based on the soil-block test method specified by the American Wood Protection Association (AWPA) after leaching process. Treated specimens were also subjected to th...
S Nami Kartal, E Terzi, C Kose, J Hofmeyr, Y Imamura
Point sur la réglementation et contraintes administratives
1990 - IRG/WP 3575
J H Moneger
Pyrolytic treatment of CCB treated wood
2005 - IRG/WP 05-50224-23
Environmental problems caused by the toxicity of metallic elements of the preservative occur when treated wood comes to end of use. In the experiment, CCB treated wood chips were pyrolysed at various temperatures and residence times and the behaviour of boron, chromium and copper was observed.
The three elements are almost entirely retained in the charcoal. There is no influence of final tempera...
J F Collin, C G Jung, J M Romnée, J Delcarte
Observations on the uptake and penetration of various liquids in clear heartwood and sapwood of Pinus radiata D.Don
1983 - IRG/WP 3224
Volumetric uptake of water (aqueous copper-chrome-arsenic (CCA)) or methanol, applied by bulk hydrostatic pressure to air dried clear heartwood specimens of Pinus radiata D. Don, far exceeds that of a wide variety of polar and non-polar solvents. In air dried sapwood, the volumetric uptake of CCA tends to be less than that achieved for most solvents including methanol. No comprehensive explanation...
J E Barnacle
Pyrolysis GC-MS as a tool for lignin analysis
1987 - IRG/WP 2201
Pyrolysis-GC-MS is a rapid process for analysis of rather complex organic compounds. The method has great application to petroleum shale oil and wood lignin. Small powdered samples (several mg) are placed in silica capillary tubes and rapidly heated in an inert atmosphere such as He or N2. Breakdown products of the pyrolysis are then trapped and held for an allocated time in an injector attached t...
L Doimo
Future Directions Regarding Research on the Environmental Impacts of Preservative-Treated Wood: Environmental Impacts of Preservative-Treated Wood. February 8-11, 2004, FL, USA
Workshop – Research Needs
2004 - IRG/WP 04-50222
This paper presents a series of documents that focus on research needs for potential future work focusing on the environmental impacts of preservative-treated wood. These documents were developed through a conference sponsored by the Florida Center for Environmental Solutions (FCES), located in Gainesville, Florida. The conference was held in Orlando, Florida, February 8 – 11, 2004 and the tit...
H M Solo-Gabriele, J D Schert, T G Townsend
The WOODCARE project: Development of detection methods for Death watch beetle larvae and fungal decay
1999 - IRG/WP 99-20172
Woodcare was a European project coordinated by English Heritage. The aim of the research was to develop more targeted and more environmentally friendly treatment methods for Death watch beetle infections in Oak constructions of historical buildings. TNO has developed two new methods for fast and reliable detection of Death watch beetle larvae and related fungal decay in Oak. The problem with Death...
P Esser, P Van Staalduinen, A C Tas
Distribution of fire retardant chemicals in kempas (Koompassia malaccensis)
1994 - IRG/WP 94-40037
Samples of Kempas (Koompassia malaccensis) heartwood were treated by vacuumpressure impregnation with solutions of monammonium phosphate, diammonium phosphate, ammonium sulphate or a borax-boric acid mixture. A commercial saltbased fire retardant formulation was also used. After slow air drying, the treated wood samples were sub-divided and zonal analysis carried out in order to determine the grad...
A R A Malek, R J Murphy
Wood preservative potential of fractions of wood pyrolysis tar made from Japanese larch
1996 - IRG/WP 96-30102
Wood pyrolysis tar, which was discharged as a waste by-product in the production of charcoal from Japanese larch (Larix leptolepis), was separated into several fractions by solvent extraction using tetrahydrofuran, benzene and aqueous alkali. The fractions obtained were physico-chemically characterized and examined for wood preservative potential. This separation method compared favorably with fra...
T Suzuki, S Doi, M Yamakawa, K Yamamoto, T Watanabe, M Funaki
Fungicidal properties of wood tar being a side product of pyrolysis of previously treated wood with preservatives
2004 - IRG/WP 04-30340
The objective of the paper was to estimate the limit of the fungicidal value of wood tar being a product of pyrolysis of wood previously treated with creosote oil or salt preservative of the CCB type. The effectiveness of wood tar in wood protection against fungi causing brown rot and soft rot was compared to the effectiveness of creosote oil (type WEI-B). Wood was impregnated with alcohol solutio...
B Mazela, M Kielczewski, W Grzeskowiak
Anti-fungal properties of pyrolytic oils derived from softwood bark
2000 - IRG/WP 00-30218
Thermal decomposition of balsam fir and white spruce mixed bark residues at 450°C and under vacuum (< 20 kPa abs.) results in high yields of pyroligneous liquors rich in phenolic content. This vacuum pyrolysis process has been scaled-up to a pyrolysis plant with a feed capacity of 3.5 t/h of softwood bark, which is the largest plant of this type in the world. The pyrolytic aqueous condensates ...
D Mourant, Dian-Qing Yang, Xiao Lu, C Roy
Ionic liquids with organic and inorganic anions as highly active wood preservatives
2006 - IRG/WP 06-30411
Quaternary ammonium tetrafluoroborates, nitrates(V), propionates, acetates and formates with alkoxymethyl substituents were prepared and tested on wood destroying and sapstaining fungi. These new compounds are ionic liquids (ILs), which penetrate very well into Scot pine wood. Alkoxymethyldecyldimethylammonium tetrafluoroborates and nitrates(V) show better microbial activity against Coniophor...
J Zabielska-Matejuk, A Skrzypczak
Thermal decomposition behavior of CCA-treated wood for safe disposal and the safe recovery of heavy metals through pyrolysis
2006 - IRG/WP 06-50238
If we could estimate the chemical changes in heavy metals by temperature in chromated copper arsenate (CCA)-treated wood during pyrolysis, it is expected that we could solve the environmental problems of heavy metals, which may occur during pyrolysis, and therefore, the thermal decomposition behavior of effective elements of CCA-treated wood was examined to find a safe disposal method. First, CCA-...
Dong Won Son, Dong-heub Lee, Sun-hae Cheon, Myung Jae Lee
Hydrophobic characteristics of pyrolysis oil
2008 - IRG/WP 08-30458
Hydrophobic behavior of pyrolysis oils obtained by pyrolysis of Scots pine wood (Pinus sylvestris L.) by using extruder type pyrolyzer at 450, 550 and 600 ºC was the objective of the study. Sapwood specimens (15×25×50 mm along the grain) were impregnated with the obtained pyrolysis oils by full- and empty cell treatment.
The results indicated that wood impregnated with the studied pyrolysis o...
A Temiz, M Hakki Alma, N Terziev
Adsorption of ionic liquids by Scots pine wood (Pinus sylvestris L.) and beech (Fagus sylvatica L.): equilibrium and kinetic modeling
2010 - IRG/WP 10-20447
In this paper methods for the adsorption study of quaternary ammonium-based ionic liquids on Scots pine (Pinus sylvestris L.) and beech (Fagus sylvatica L) are presented. Kinetic and equilibrium adsorption of compounds were evaluated. The equilibrium data fitted very well to the Langmuir adsorption models. The highest correlation coefficients determined from the pseudo-second order kinetic model ...
J Zabielska-Matejuk, A Stangierska, M Kot
The use of thermal desorption and pyrolysis combined with a semiconductor VOC detector for the on-site detection of preservative-treated wood
2010 - IRG/WP 10-20456
The purpose of this study was twofold; to identify possible marker molecules released from preservative-treated wood upon heat treatment and then develop a prototype detector for this marker. Two methods for heating the samples were used: Pyrolysis combined with Gas-Chromatography with IR-detection and Thermal Desorption combined with Gas-Chromatography with mass detection. A first prototype detec...
I Svensson, A Gonzalez, L Irusta, Mª J Fernandez-Berridi, O Munné
The study of fungicidal values und sorption processes of ionic liquids- potential wood preservatives on soils
2011 - IRG/WP 11-30572
In the paper, the fungicidal activity of new ionic liquids structures, N,N-dimethylalkylamines derivatives, containing a spacer built of 7 or 10 methylene groups with nitrate(V) and tetrafluoroborate anions, didecyldimethylammonium and benzalkonium nitrate(V) were presented. The research was also conducted on the sorption of cations of ammonium ionic liquids on five types of podzolic, humic alluvi...
W Przybylska, J Zabielska-Matejuk, A Stangierska, A Skrzypczak
The assessment of biological and mechanical properties of wood treated with ionic liquids – N,N-dimethylamine and 1-decylimidazole derivatives
2012 - IRG/WP 12-40582
This paper presents the results of tests of the effectiveness of action of new imidazolium and bis-ammonium ionic liquids against Basidiomycotina and Ascomycotina wood-destroying fungi. All the investigated ionic liquids showed high fungicidal action against Coniophora puteana. In order to characterize the influence of ionic liquids on mechanical wood properties, the compression strength along the...
W Przybylska
Utilization of thermodesorption coupled to GC-MS to characterize volatiles formation kinetics during wood thermodegradation
2012 - IRG/WP 12-40587
Identification of volatile degradation products produced during wood mild pyrolysis is important to have better insight on thermodegradation mechanisms. Previous studies have shown that thermodesorption coupled to GC-MS is an attractive tool to characterize and quantify products formed during wood thermodegradation indicating an higher susceptibility of hardwoods to thermodegradation compare to so...
K Candelier, S Dumarçay, A Pétrissans, M Pétrissans, P Kamdem, P Gérardin
Relationships between heat treatment intensity and some conferred properties of different European softwood and hardwood species
2012 - IRG/WP 12-40593
Effect of treatment intensity on conferred properties like elemental composition, durability, anti swelling efficiency (ASE) and equilibrium moisture content (EMC) of different European softwood and hardwood species subjected to mild pyrolysis at 230°C under nitrogen for different durations has been investigated. Independently of the wood species studied, elemental composition is strongly correl...
M Chaouch, S Dumarçay, A Pétrissans, M Pétrissans, P Gérardin
Triazole – based ionic liquids to protect of lignocellulosic materials against fungi
2012 - IRG/WP 12-30601
In presented paper we examined on biotic properties of novel structure of tebuconazole derivatieves: tebuconazole hydrochloride, allyltebuconazole chloride, methyltebuconazole iodide, tebuconazole dihydrocitrate. Our investigation against wood-degrading fungi were contained also the didecyldimethylammonium 3-aminotriazolate as well as didecyldime-thylammonium nitrate(V) with tebuconazole or wit...
J Zabielska-Matejuk, J Pernak, I Frąckowiak, A Stangierska, W Przybylska, M Kot
Antifungal properties and bonding of menthoxymethylimidazolium ionic liquids with Scots pine wood
2013 - IRG/WP 13-30627
Antifungal activities of five chiral ionic liquids - menthoxymethylimidazolium derivates against brown-rot decay fungus (Coniophora puteana), white-rot decay fungus (Trametes versicolor) and blue-stain fungus (Sclerophoma pithyophila) were determined using screening agar-plate method. Results from antifungal tests revealed that 1-butyl-3- menthoxymethylimidazolium chloride exhibited the stronges...
J Zabielska-Matejuk, J Feder-Kubis, A Stangierska
Recycling of used railroad ties via two-staged pyrolysis for fractionation of wood preservatives and bio-oil: pyrolytic characterization by TGA and Py-GC/MS
2015 - IRG/WP 15-50311
Creosote and copper naphthenate (CuNap) (in an oil carrier) treated railroad tie materials (crossties or sleepers) were initially heat-treated at 200 – 300 oC and subsequently pyrolyzed via thermogravimetric analysis (TGA) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) to recover wood preservatives and produce a higher quality bio-oil. Preservative-desorptive temperatures at 200 a...
Pyoungchung Kim, J Lloyd, Jae-Woo Kim, N Labbe
Effects of Bio-oil Obtained from Laurel (Laurus nobilis) Residues on Biological, Physical, and Mechanical Properties of Treated Wood
2016 - IRG/WP 16-30692
In this study, the effects of bio-oil obtained from Laurel (Laurus nobilis) residues on biological (decay, insect, termite resistance), physical (water absorption, tangential and radial swelling), and mechanical properties (MOE, MOR and CSPG) of treated wood samples were studied. The bio-oil used in this paper was produced by the help of fixed bed reactor type pyrolyzer. GC/MS analysis showed that...
S Akbas, A Temiz, N Terziev, M H Alma, S Palanti, E Feci
Activity of wood preservatives against mould fungi
2016 - IRG/WP 16-30695
The resistance of experimental and commercial wood preservatives to mould fungi was determined using a method recommended by the Building Research Institute Instruction. The research of the inhibiting actions of the growth of fungi was carried out on the Scots pine wood Pinus sylvestris L. and beech Fagus sylvatica L. The most active compounds against mould were experimental herbicidal ionic li...
J Zabielska-Matejuk, A Stangierska