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Properties of solid biofuels obtained from residues of wood-based materials

Walkowiak M., Witczak M., Sajdak M., Cichy W. J.

Drewno : prace naukowe, doniesienia, komunikaty

2018

vol. 61, nr 202

99--118

Processing of wood and composite wood materials contributes to the creation of considerable amounts of production residues. These materials are potential energy sources. However, the content of synthetic substances (including binding and finishing agents) may cause the emission of harmful substances during the thermal destruction of such materials. Therefore, to derive benefit from waste from wood-based materials, it is necessary to obtain information on its physical and chemical properties (especially its fuel properties). Hitherto, literature reports say little of those properties. The aim of this study was to determine the basic fuel properties of residues from the industrial processing of composite wood materials (such as particleboards, fibreboards and plywood) and to assess their suitability for biofuel production. Four groups of wood-based materials were tested:. particleboards (standard boards and OSBs), fibreboards (MDF, HDF, CDF and SB), layer materials (plywood and LVL), and wood materials being a combination of the other groups (double T-bars). The total moisture content, ash content, elementary composition (C, H, N, S, Cl), trace element content (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn) and gross calorific value were determined, and the net calorific value was calculated. The results showed that the tested wood materials had favourable fuel properties and could be used in place of raw wood as an energy source.