Volatile release profiles of some Turkish lignites

Abstract

Abstract Volatile matter determination is one of the most important criteria in coal analysis, because it is used for evaluating coals for utilisation. In this study, using TG curves of twenty-five lignite samples from various coal reserves in Turkey, the volatile release profiles were prepared. In the light of these profiles, the devolatilisation behaviour of the lignite samples was discussed. During the TG studies, 100 mg sample was used and nitrogen was allowed to flow through the system. The temperature was raised with a heating rate of about 40 K min −1 to 1223 K and the volatile matter release of the sample was determined as a function of time and temperature.