Thermochemical Properties of Pellets Derived from Agro-residues and the Wood Industry
2017
Christoforou, Elias A. | Fokaides, Paris A.
Biomass utilization for energy production purposes can play an important role to the global effort for mitigating the environmental burdens associated with the highly criticized fossil fuelled energy production. A significant potential of solid residues is produced in the agro-industrial sector and wood industry. This potential can be utilised for the production energy by means of pre-treatment and pelleting. This report aims to present the results obtained from the thermochemical characterisation of eight pellets derived from purely processed and blends of woody and agricultural residues biomass feedstock; walnut shells, three-phase olive pomace, exhausted olive husk, chemically untreated wood shavings, mulberry tree pruning, chemically untreated wood shavings—grape pomace blend. Analyses for the determination of total moisture, hydrogen, nitrogen, carbon and ash content, as well as the net calorific value were conducted following the standardized procedures of the 17225 standard series, in order to carry out a preliminary evaluation of the physical and chemical characteristics of the investigated pellets. Satisfactory results were obtained from all samples with regard to their energy content and the total nitrogen content. Ash content of the pellets was found within the acceptable limits for the majority of samples except for the pellets delivered from exhausted olive husk, mulberry tree pruning and the blend of grape pomace (85 vol%) and chemically untreated wood shavings (15 vol%).
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