Kinetic study of the reaction of different hardwood sawdust chars with oxygen. chemical and structural characterisation of the samples.

M.R. MAGNATERRA; J. FUSCO; J. OCHOA; A. L. CUKIERMAN

Interlaken

Congreso; Advances in Termochemical Biomass Conversion Conference; 1992

The ractions of sawdust chars prepared from three typical native hardwoods species andl liginin at different oxygen concentrations and reaction temperature was studied by isothermic thermogravimetric analysis.Samples composition was determined by proximate and ultimateanalysis. Apparentt surfac  areas of the devolatilized samples were evaluated from nitrogen and carbon dioxide adosrption isotherms by the BET method and applying the Dubinin-Radtishkevich equation, respectively. Porosimetry and electronic scanning microscopywere also carried out.