Chemical and physical characterization of pellet composed of biomass of different essences

The increasing environmental concerns due to the use of fossil fuels have led to the search of renewable and lowimpact energetic sources: The use of different biomass prunings for pellet production has proven to be a smart and eco-friendly option that contributes both to energy sustainability and to waste management. Agricultural residues can be an interesting raw material, whose properties have been shown to have a relevant efficiency in the bioenergy sector. In this study 6 types of pellets were obtained by combining 3 different types of prunings such as olive, kiwi and citrus tree residues. The characterization consisted both of physical analysis, such as the evaluation of moisture and ash content, and chemical determination of C, H, N and S content, HHV and LHV determination. Results obtained not only confirmed the high energy value of these materials, but also made it possible to make a qualitative comparison between the different mixed compositions, in view of their possible utilization in the bioenergy field.