This paper examines the total quantities of combustible (carbon, hydrogen, and sulphur) and non-combustible matters (oxygen, nitrogen, moisture, and ash) contained in biomass of all major forest crops (oak, beech-tree, maple, yoke elm and fir), woody horticultural crops (apple, grapevine, sour-cherry, plum, and hazelnut) and arable crops (wheat, soybean, rapeseed, and sunflower) in the territory of Croatia. Also, in addition to briquette production, pelleting is the most often used technology in the biomass treatment. For this purpose, pellets were produced from these sorts of biomass and analyzed according to DINplus standard requirements (durability, bulk density, diameter, length, ash content, nitrogen content, sulphur content, chlorine content, volatiles content, coke content, fixed carbon content and lower energy value).
Key words: Renewable energy sources, agricultural biomass, forest biomass, pellets
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