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Supplement to Document No: IRG/WP/56. Health and safety aspects of the use of wood preservatives
1975 - IRG/WP 356
H Willeitner


Natural durability transfer from sawmill residues of white cypress (Callitris glaucophylla). - Part 3: Full penetration of the refractory sapwood of white cypress
2000 - IRG/WP 00-40167
The heartwood of white cypress, Callitris glaucophylla, is renowned for its termite resistance and durability against decay. The sapwood, which can represent up to 30% of log volume, is non-durable and refractory to conventional preservative treatment. Previous work ascribes the lack of permeability to oily deposits within tracheids and ray cells. Environmental scanning electron microscopy was use...
M J Kennedy, L M Stephens, M A Powell


Methodology challenges in developing a transfer of natural durability from sawmill residues, illustrated by experiences with white cypress (Callitris glaucophylla)
2000 - IRG/WP 00-20203
The transfer of durability-conferring extractives from durable to non-durable wood has been accomplished often, but usually as an educational exercise rather than as a commercially oriented process. In the latter environment, many factors previously overlooked become vitally important. How to study them, in the absence of well-developed methodology and given the shorter timeframes being demanded b...
M J Kennedy, M A Powell


Present status and potentiality of the economic utilization of the sawmill residue and wastage in Bangladesh
2004 - IRG/WP 04-50211
This study has been carried out to obtain a clear picture about the current status of utilization of sawmill residue and wastage. In order to accomplish the study a random survey has been conducted in 27 sawmills of Khulna District and in 10 sawmills of Jessore District. Most of sawmills in these area run at a very primitive level compared to modern technology. Species used for conversion mainly d...
M A Islam, M S Rahman, A K M A Bosunia, A K Lahiry


Natural durability transfer from sawmill residues of white cypress (Callitris glaucophylla). - Part 2: Laboratory fungal bioassays
2000 - IRG/WP 00-20204
Extracts from sawmill residues of the naturally durable white cypress, Callitris glaucophylla were tested for fungicidal activity in a series of laboratory bioassays. The effects of different extraction solvents, techniques and sources of material on the biocidal efficacy of the resultant extracts were evaluated. Soil jar decay tests were used initially however, contractual time constraints necess...
M A Powell, L M Stephens, L Francis, M J Kennedy


Composting of waste building up in sawmill dipping basins
1990 - IRG/WP 3570
We have studied composting of waste building up in dipping basins at sawmills although this waste can also be disposed of by incineration. Controlled composting within the sawmill area seems to be a feasible method. Another possibility is to accomplish composting directly at the local dumping site. Waste containing antistain chemicals is generally classed as hazardous. It cannot therefore be place...
I A Linderborg, U Ek


Natural durability transfer from sawmill residues of white cypress (Callitris glaucophylla). - Part 1: Optimisation of the extraction conditions
2000 - IRG/WP 00-30238
As the first phase of a large project aimed at recovering 'waste' durability components from sawmill residues of Callitris glaucophylla, several solvents and extraction methods were evaluated, initially in the laboratory and then at pilot industrial scale. Extracts were compared by crude total dissolved solids content, by chemical analysis using GC-MS and LC-MS, and by laboratory...
M J Kennedy, Hui Jiang, L M Stephens


Natural durability transfer from sawmill residues of white cypress (Callitris glaucophylla). - Part 4: Analysis of extracts and treated wood for active components
2000 - IRG/WP 00-20215
In order to facilitate the commercial implementation of a large project aimed at recovering 'waste' durability components from sawmill residues of Callitris glaucophylla, it has been essential to develop analytical methodology for the important bioactive components of the heartwood extract. This methodology will be used 1) to standardise the activity of successive production batc...
Hui Jiang, M J Kennedy, L M Stephens


A preliminary comparison of GC, HPLC and ELISA analysis of resin acids in pulp mill effluents
1997 - IRG/WP 97-20120
Resin acids are naturally occurring diterpenoid carboxylic acids present in most Canadian softwoods. There are eight common resin acids that are classified into two groups; the abietanes and the pimaranes. During processing of wood products they can be released into the environment where they are of concern because of their acute toxicity toward fish and other aquatic life. Traditionally resin aci...
A N Serreqi, K Stark, Xiumei Feng, J N Saddler, C Breuil


Sawmill Evaluation of a Bioprotectant against Moulds, Stain and Decay on Green Lumber
2003 - IRG/WP 03-10460
Moulds, stain and decay cause serious problems on wood utilization. Though a growing volume of wood is kiln-dried, the market for green exports remains significant, and environment-friendly wood protection is required to replace traditional chemicals. As a solution to this problem, Forintek Canada Corp. developed a bioprotectant for protecting logs and green lumber from moulds, stain and decay, wh...
Dian-Qing Yang, M Gignac, M-C Bisson


Some studies on natural resistance of different trees and prevention of infestation by termites through use of industrial effluents at Karor, Layyah, Pakistan
2008 - IRG/WP 08-10637
The experiments were conducted to determine natural resistance/susceptibility in woods of Jaman (Syzygium cumini), Kikar (Acacia nilotica Willd.), Shisham (Dalbergia sissoo Roxb.), Poplar (Populus deltoids), Semal (Bombax ceiba) and Sufaida (Euclyptus camaldulensis) against subterranean termites’ infestation at Karor, Layyah, Pakistan. Wood stakes of these trees (30x12x3cm) were buried in soil a...
S Ahmed, M Arshad Ejaz, M Asam Riaz, A Hussain


Wood natural durability an asset to the circular economy of wood industry: valorization of waste from sawmills for the cosmetics sector through the ValorExtr@ct project
2019 - IRG/WP 19-10954
The French Guiana ‘s forest is characterized by its incredible biodiversity; more than 1200 wood species have been listed to date. Some argue that this diversity would be linked to the hot, humid climate with no seasonal variation, which would be ideal conditions for the installation of a constant "arms race" between predators and prey. Thus, to cope with biotic and abiotic attacks, wood species...
N Amusant, J Passelande, D Fernand, J Beauchene, E Houel, M Royer