ABSTRACT
The wood quality, which is mostly dependent on the anatomical structure and chemical composition, differ with the type of timber species. The main chemical constituents of wood are cellulose, hemicelluloses, lignin, and extractable materials. In wood, it is always associated to cellulose, but do not occur in the same association in other cellulosic materials. Chandrasekaran et al. studied the chemical composition wood chip and wood pellet samples manufactured in the United States and Canada analyzed for their energy and chemical properties and compared to German standards for pellet quality. The calorific value, moisture content, and ash content of the samples were determined according to the American Society for Testing and Materials methods. The sample characteristics distributions, such as heating value, ash content, moisture content, ions, and heavy elements, are presented. Wood is the key raw material of the wood industry used for the manufacture of furniture, other domestically useful articles, and products.
