Canadian Forest Service Publications
13C CPMAS NMR analysis of the fines of log sortyard residues. 1997. Preston, C.M; Forrester, P.; Sauder, E.A. Pages 757-763 (Vol. 1) in R.P. Overend and E. Chornet, Editors. Making a business from biomass in energy, environment chemicals, fibers and materials, Proceedings: 3rd Biomass Conference of the Americas. August 24-29, 1997, Montreal, Quebec, Canada. Pergamon, Oxford; Tarrytown, NY.
Issued by: Pacific Forestry Centre
Catalog ID: 4830
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Fines from log sortyards (<5 cm) present a disposal problem and a utilization potential. We examined <3 mm and 3-13 mm size fractions of sortyard wastes near Vernon, B.C., and <16 mm fines from mechanical separator trials near Vernon and Port Alberni. To facilitate analysis, the 3-13 mm samples were separated by floatation and hand-sorting into rock fragments and an organic fraction. The 3-13 mm organic fractions and <16 mm separates were still too high in mineral content to be used for fuel. The organic fingerprints obtained from solid-state 13C nuclear magnetic resonance spectroscopy (CPMAS NMR) were similar to those for decomposing wood or forest floor and did not indicate high bark content. The <3 mm fraction was lower in organic matter with C-13 NMR spectra similar to those found for mineral soil size fractions. These materials should be suitable as organic amendments for site reclamation or composting with due regard for their high C/N ratios and the naturally slow rate of wood decomposition.