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Leaching of chromium and other cca components from wood-cement composites made with spent CCA treated wood
2000 - IRG/WP 00-50153
Wood cement composites are an attractive option for recycling spent treated wood, since the CCA treatment enhances the physical, mechanical and biological resistance properties of the composite. However, we have noted a higher than normal leaching of chromium from these products and this appears to result from conversion of some of the trivalent chromium to the more leachable and toxic hexavalent ...
D Qi, P A Cooper
Chelator production and cellobiose dehydrogenase activity of wood inhabiting fungi
2000 - IRG/WP 00-10363
Multiple components have been postulated to be involved in the Fenton-based biological degradation of wood by brown rot fungi. Chelators have been implicated in essential iron reduction steps. Cellobiose dehydrogenase activity and quinone reducing activity have also been implicated in brown rot biodegradation. When biochelator production by three white rot fungi, three brown rot fungi and three wo...
Weihong Qi, J Jellison
Serial techniques for producing fire-retardant wood products
1997 - IRG/WP 97-30127
A series of techniques including fire-retarders denoted by WFR-1, WFR-2. WFR and their applications in producing fire-retardant wood (WFR wood), fire-retardant plywood (WFR plywood), fire-retardant particleboard (WFR particleboard) and fire-retardant MDF (WFR MDF) were investigated The fire retarders were low toxic, decay resistant and less leachable. The treated wood and WFR panels were of excell...
Zhu Jia Qi, Liu Yan Ji, Gao Chao Ying