IRG Documents Database and Compendium



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Bio-Based but Toxic? The Neglected Ecotoxicity of Leachates from Wood Preservatives—A mini-review
2025 - IRG/WP 25-50403
Bio-based Wood preservatives, derived from renewable biomass, are emerging as promising alternatives to traditional synthetic wood preservatives. Research groups all around the world are studying the development of bio-based – environmentally friendly – wood…
A Barbero-Lopez, A Haapala


Liquefied wood polyols: Ecofriendly bio-based preservative for sustainable protection of wood from Termite attack
2018 - IRG/WP 18-10916
…natural products having potential to use as bio based wood preservatives against biological enemies of timber like termite. In this study, woody waste recovered from wood based industry has been liquefied in different liquefying media in defined reaction condition to produce chemically active liquid which is being…
A Kumar, A John, T S Mehra, A K Pandey, S Singh Chauhan


Reduction of Environmental Toxicity Through Eco-friendly Wood Biopreservative
2007 - IRG/WP 07-50243
…are copper, chromium, arsenate, zinc, etc. Though these preservatives are useful to protect wood from biodeterioration, but environmental toxicity is also related with them. The present study is to investigate the fungitoxic activities of Dalbergia sissoo leaves instead of chemicals. Acetone with five different…
A Humayan Kabir, M Firoz Alam


Protection of hard and softwood through Neem leaves extracts and oil - A direction towards development of eco-friendly wood preservatives
2006 - IRG/WP 06-30394
Conventional wood preservatives like CCA and CCB are facing lot of criticism all over the world. It is essential to address the problem in view of environment protection. Eco-friendly wood preservatives may be considered as one option. The present study is an expolartion of…
S Dhyani, S Tripathi


Preliminary Studies on ZiBOC- A Potential Eco-friendly Wood Preservative
2005 - IRG/WP 05-30372
…One sign of this is the dramatic increase in the use of preservatives based on inorganic metal oxides, which fix in wood. Among such preservatives the most common is chromated-copper-arsenate. In Ascu chromium and arsenic both are carcinogenic thus in the present study a new and fixed composition of three…
S Tripathi, J K Bagga, V K Jain


Towards eco-friendly fire retardant of wood - exploring fungal biomineralization
2025 - IRG/WP 25-11052
…with calcium carbonate has been shown to be a promising, eco-friendly alternative. Calcium carbonate is an efficient flame retardant that does not contribute to smoke and toxicity and is practically insoluble in water, meaning leaching is not an issue. Most of the approaches described so far, however, require the…
K Butina Ogorelec, A Gubenšek, A Sandak


Proposal for New Evaluation Criteria for Exterior Products to Achieve a Circular Economy
2025 - IRG/WP 25-50408
…materials in construction. In this context, the use of preservative-treated wood, selected based on the principle of using the right material in the right place, has been emphasized. However, a systematic evaluation criterion for promoting resource circulation and realizing a circular economy for exterior…
K Murakami, T Fujii, Y Iijima, T Hikiji


End-of-life options for engineered wood products / Treated timber in a circular economy
2023 - IRG/WP 23-50383
…amount of timber, engineered wood products (EWP’s), and preservative treated wood (PTW). Limited landfill capacity, increasing costs, and changes in public perceptions have encouraged development of robust re-use and recycling systems for paper, metals, and plastic, forming part of an increasing interest in…
H Brooke


Aiming for eco-friendly log production and wooden construction!
2021 - IRG/WP 21-50365
In order to reduce greenhouse gas (GHG) emissions to zero by 2050 in the fields of forest and forest products, it is necessary to promote appropriate management and renewal of planted forests, and development of wooden building materials and the wooden constru…
N Hattori


Economic and Alternative Preservative Research with an Overview of its Impact on the Dynamics of Wood Tie Markets and Railroads
2019 - IRG/WP 19-30751
This presentation will discuss the Railway Tie Association’s (RTA) efforts in economic research for the North American wood tie industry, along with decades-long research into improving wood preservation processes and its resulting economic impact for railro…
J C Gauntt


Adhesion durability of the thinnest CLT in Japan treated by solvent recovery system
2019 - IRG/WP 19-40882
…thinnest CLT (36 mm thickness) in Japan impregnated with preservatives (azole neonicotinoid compounds (AZN)) under solvent recovery system so called “dry pressure process” for long-term durability. The adhesion durability tests were conducted in accordance with the Japanese Agricultural Standard (JAS) of…
K Kawakami, W Ohmura


Uncertainty in life cycle assessment of preservative treated wood – copper and freshwater ecotoxicity
2017 - IRG/WP 17-50331
…due to high uncertainties. For leaching of wood preservatives, the uncertainty is two fold. The actual leaching over several years can be hard to predict, but the characterisation factors (CF) can potentially have even higher uncertainty. To deal with this uncertainty, the USEtox model have been developed…
L G F Tellnes


Evaluation of color and gloss in decorative applied to cases of Pinus radiata wood impregnated (D. Don) copper type C azole micronized
2015 - IRG/WP 15-20571
…P (T3), and two, were applied in mixture with the uCA-C preservative Black Cylinder (T5) and Red Cylinder (T4). Two varnish were tested: a water-based varnish (T6) and solvent based varnish (T7). Additionally, untreated radiata pine specimens were tested as a reference (T1). The changes in gloss and color of these…
R Garay, M Inostroza


A Green and Novel Technology for Recovering Copper and Wood from Treated Waste - Part I
2015 - IRG/WP 15-50309
Preservative treatment of wood extends its service life. The US consumes about 70 million pounds of copper and produces about 7 billion board feet of treated wood annually. Burning and reusing CCA and copper treated wood wastes are disallowed by US EPA due to…
S Chen


Bio-based thermoset resins for bonding and eco-friendly preservation in the wood industry
2013 - IRG/WP 13-40650
Yellow dextrins and tannins were used in wood adhesives formulation to substitute resins based on formaldehyde. Several formulations were carried out in alkaline aqueous media by varying the weight fraction of two compounds from 10% to 30%. The cross-linking w…
C Motillon, A Allal, A Visse, F Charrier, B Charrier, A Baldé


The decontamination of a historical xylotheque with liquid carbon dioxide
2011 - IRG/WP 11-10757
…including the wood specimens, was impregnated with a wood preservative containing dangerous pesticides. Consequently, the removal of these pesticides was necessary prior to the restoration.The furniture surface was cleaned with a special detoxification agent mainly made of orange terpenes, which could not be…
S Zoppke, A Unger, J Mankiewicz, M Eisbein


Towards designing eco-friendly buildings with in-built termite protection
2010 - IRG/WP 10-50273
…We consider this product meets the challenge of an eco-friendly building product that is termite resistant.
J R J French, B M Ahmed Shiday, B Maggiolo, D Maggiolo


Eco-Friendly Composites from Bagasse and Soy-based Resin
2009 - IRG/WP 09-40462
In this study, bagasse and soy-based resin were used for producing composite materials. The objective of this study was evaluation of some physical and mechanical properties of boards made of various ratios (100:0, 60:40, 40:60 and 0:100) of bagasse to wood fi…
G Rassam, B Jamnani


Ecotoxicity of furfurylated wood – Effect of leachate on aquatic bacteria
2008 - IRG/WP 08-50250
Environmental concern regarding the use of toxic preservatives such as CCA (chromated copper arsenate) has been put forward. In the EU, USA and Japan, CCA is now phased out for residential use and for use in water contact. Several ecotoxicological studies of wood treated with conventional preservatives were…
A Pilgård, M Westin


Bifenthrin recovery from glue-line-treated plywood
2007 - IRG/WP 07-20355
…specifications, it is important that the concentration of a preservative in the manufactured product can be accurately determined. Plywood test panels were prepared from hoop pine (Araucaria cunninghamii) veneers, using four types of adhesive; isocyanate, high alkali phenol formaldehyde (PF), low alkali PF and urea…
J Norton, L Stephens


Efficacy of chitosan in combination with GRAS (Generally Recognised As Safe) compounds as a potential wood preservative
2007 - IRG/WP 07-30414
In vitro studies were undertaken to evaluate the synergy between chitosan and selected GRAS (Generally Recognised As Safe) compounds against two sapstain fungi Sphaeropsis sapinea and Leptographium procerum. Bioassays performed on nutrient medium suggested th…
C Chittenden, K Thämelt, T Singh


Preservative-treated wood as a component in the recovered wood stream in Europe – A quantitative and qualitative review
2004 - IRG/WP 04-50218
Wood preservatives have been used for the protection of timber products in the European market in appreciable quantities for about 100 years. Between the 1960s up to the present day this usage has been particularly noticeable. The aim of this paper is to present…
R J Murphy, P Mc Quillan, J Jermer, R-D Peek


The effect of a chelator mediated fenton system on activation of TMP fibres and decolorization of synthesized dyes
2004 - IRG/WP 04-50223
…of the dyes is similar to that of some organic wood preservatives and may provide a means for remediation of preservative contaminants in soils.
Yuhui Qian, B Goodell, J Jellison


Ecotox Testing of Leachates as an Alternative Approach for Environmental Impact Assessment of Wood Preservatives
2002 - IRG/WP 02-50185
…leachates is presented with leachates from solvent based preservatives treated timber as example. Daphnids as very sensitive bioindicators exhibited differences due to the included biocides of the preservative formulation tested as well as the leaching procedure used. The methodology of direct ecotoxicological…
H-W Wegen


Ecotoxicological effects of exposed CCA preservative treated wood in environments
2001 - IRG/WP 01-50173
…of the laboratory was used. The effective components of preservatives were leached and determined after artificially conditioning a soil pot of CCA treated wood with more than 500mm water, the average monthly precipitation. As the water passed through the soil, As, Cr and Cu in the soil as well as the filtrtes…
Dong-heub Lee, Dong-won Son