Conference article

Burning tests of some agricultural waste biomass materials such as sunflower seed shell (SSS); hazelnut shell (HS); rice hull (RH); and olive refuse (OR) were performed in order to compare the combustion reactivities of these materials under dry air and oxygen. For this purpose; these samples were burned in a thermal analyzer to obtain TGA (Thermogravimetric Analysis); DTG (Derivative Thermogravimetry); DTA (Differential Thermal Analysis); and DSC (Differential Scanning Calorimetry) thermograms under both conditions. Initial sample mass was approximately 10 mg for each sample which has a particle size of <0.25 mm; and temperature was raised from ambient to 900°C with a linear heating rate of 40°C/min under gas flow rate of 100 mL/min. No hold time was allowed at the final temperature. The results of this study showed that the thermal reactivities of biomass species change in a wide region; and the type of the oxidative medium plays very important effects on the burning parameters such as the ignition point; maximum rate of combustion and its temperature; as well as the end point of burning. On the other hand; macromolecular ingredients of biomass such as hemicellulosics; celluloses; and lignin have significant effects on the combustion behavior of biomass.

Biomass; Agricultural Wastes; Combustion; Dry Air; Oxygen