Biomass types
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Animal waste
Effluent, manure and litter can be used to generate gas and fuel, with nutrient-rich solids a by-product.
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Crops
Crops grown specifically for energy, as opposed to food and fibre, are known as energy crops.
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Crop residue
Residue from crops such as grains, nuts, grapes and sugar cane is suitable for creating energy.
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Trees
Some trees can be harvested regularly for woody biomass. Others have seeds that are rich in oil.
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Tree residue
The branches and tops of trees left after plantation harvesting and the residue produced at sawmills can be used to create energy.
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