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Alumina and silica are commonly used as solid matrix for characterizing the combustion behavior of crude oils by differential scanning calorimetry (DSC) technique. However, the two basic factors, heating rate and total sample mass, were paid less attention in the process of experiments. Our recent study found that they might significantly change the oxidation behavior due to the use of alumina and silica as solid matrix. In this study, the effects of heating rate and sample mass on the combustion behavior of crude...

This paper deals with the burning of edible vegetable oils. Their primary use is in the field of food preparation, but they are increasingly being used as a basic raw material for biodiesel production. Four types of oils were used for the measurements: canola, sunflower, olive and pistachio. All samples were tested on a cone calorimeter using an initiator source at an external heat flux with a density of 35 kW.m-2. Time to initiation and termination of burning, as well as parameters characterizing the released hea...

Sulphur is one of the major constituents of lignite. In addition, it is used to measure the negative environmental impacts of this raw material. The presented study included field work and laboratory work. Field work was aimed at collecting coal samples, which were subjected to a series of laboratory tests. In total, about 150 coal samples were collected and used for proximate analysis. In addition, a large database of archival results from mines and scientific literature was collected. Overall, more than 4000 coa...

All the elements in the periodic table from polonium to uranium belong to the group of radioactive elements. Additionally, potassium isotopes (40 K) should also be included to the mentioned group. A number of studies have shown that coal has a moderate ability to concentrate radioactive elements, but this problem becomes more important in the case of coal ash, where the accumulation of these elements takes place. This is associated with the low volatility of uranium and thorium, of which only a small amount is rel...

Due to high quantities of animal fat resulted from leather industry, the necessity of a solution in order to neutralize the negative effects that appear by their discharge into the nature has led to continuous research in order to obtain the most suitable one for solving the environmental issue with energy recovery. Between combustion and chemical treatment, the combustion has been chosen in this study as being the most effective one, by technical and economical criteria. Before this combustion, there were perform...