TY - JOUR N2 - The use of biomass in the energy industry is the consequence of ongoing efforts to replace Energy from fossil fuels with energy from renewable sources. However, due to the diversity of the biomass, its use as a solid fuel generates waste with diverse and unstable chemical composition. Waste from biomass combustion is a raw material with a very diverse composition, even in the case of using only one type of biomass. The content of individual elements in fly ash from the combustion of biomass ranges from zero to tens of percent. This makes it difficult to determine the optimal recovery methods. The ashes from the combustion of biomass are most commonly used in the production of building materials and agriculture. This article presents the elemental composition of the most commonly used biomass fuels. The results of the analysis of elemental composition of fly ashes from the combustion of forest and agricultural biomass in fluidized bed boilers used in the commercial power industry were presented. These ashes are characterized by a high content of calcium (12.3–19.4%), silicon (1.2–8.3%), potassium (0.05–1.46%), chlorine (1.1–6.1%), and iron (0.8–6.5%). The discussed ashes contained no sodium. Aluminum was found only in one of the five ashes. Manganese, chromium, copper, nickel, lead, zinc, sulfur, bismuth, titanium and zirconium were found in all of the examined ashes. The analysis of elemental composition may allow for a preliminary assessment of the recovery potential of a given ash. L1 - http://www.czasopisma.pan.pl/Content/106865/PDF/uliasz-bochenczyk-mokrzycki.pdf L2 - http://www.czasopisma.pan.pl/Content/106865 PY - 2018 IS - No 4 EP - 115–132 DO - 10.24425/122593 KW - recovery KW - elemental composition KW - biomass ash KW - fly ash A1 - Uliasz-Bocheńczyk, Alicja A1 - Mokrzycki, Eugeniusz PB - Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN PB - Instytut Gospodarki Surowcami Mineralnymi i Energią PAN VL - vol. 34 DA - 2018.12.27 T1 - The elemental composition of biomass ashes as a preliminary assessment of the recovery potential SP - 115–132 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/106865 T2 - Gospodarka Surowcami Mineralnymi - Mineral Resources Management ER -