Anatomical structure of brazilian woods suitable for energy and paper production

Abstract

Woods of thirteen species occurring in the Amazon region, Pantanal and northeastern Brazil were studied. The total biomass and cellulose and lignine contents per m³ were estimated based on the specific gravity. The estimate cellulose and, lignine per m³ was obtained based on the specific gravity and percentual factor 0.80. Woods with possibility to be utilized for pulp were indicated according to their coeficients of flexibility and rigidity and on the Runkel's index of fibres. Woods indicated for energy production were determined weith base on their specific weight, wall fraction of fibres, percentual factor 0.80, and on their frequency of vessels and fibres.