{"id":1164,"date":"2023-11-01T09:42:27","date_gmt":"2023-11-01T07:42:27","guid":{"rendered":"https:\/\/sites.uef.fi\/biopro\/?page_id=1164"},"modified":"2025-11-16T18:30:52","modified_gmt":"2025-11-16T16:30:52","slug":"biomass-resources","status":"publish","type":"page","link":"https:\/\/sites.uef.fi\/biopro\/courses\/supply-and-energy-use-of-lignocellulosic-biomass\/course-structure\/biomass-resources\/","title":{"rendered":"Biomass resources"},"content":{"rendered":"\n
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Characterization of biomass resources<\/strong><\/h1>\n\n\n\n

Blas MOLA-YUDEGO<\/p>\n<\/div><\/div>\n\n\n\n

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Summary<\/h2>\n\n\n\n

There are several sources of wood biomass that are used for energy. A classification defines these sources as primary, secondary and tertiary sources, mostly by-products of forest management or industrial uses, and energy crops. Primary sources include logging residues, small diameter trees from pre-commercial thinings,  whole diameter trees rejected by other forest industries. Secondary sources include all that biomass resulting from other forest industries, such as sawdust, shavings or black liquor, among others. Finally, tertiary sources would include those resulting from recycling products. Energy crops are different from the previous in the sense that are not by-products but final products: their ultimate purpose is to generate biomass for energy. All these sources include a wide range of materials, with different properties that affect their management, logistics and utilization. Heating value, moisture content and bulk density, among others, are critical parameters to examine. Some of these parameters belong to the nature of the feedstock, and some others can be modified through management or transformations (such as storage, to reduce the moisture content, or pelletizing, to include the bulk density).<\/p>\n<\/div><\/div>\n\n\n\n

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Objectives<\/h2>\n\n\n\n

This introductory session focuses on:<\/p>\n\n\n\n