Biomass is organic material either directly from plants and animals or indirectly from industrial, commercial, domestic, and agricultural products.
In a huge mass of organic material, a large amount of agro-industrial waste comes forth, that is unused natural, industrial and household organic waste.
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Agriculture: vegetable crop residues (husk, straw …)
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Animal industry: slaughterhouse waste, bone meal, dead animals, poultry manure
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Forestry: forest residues, wood waste
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Fishery: cannery waste, bone meal, dead fish
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Industrial and household organic waste: sewage, organic waste, food waste, waste paper.