Sunflower husk is the solid residue produced after sunflower seeds have been peeled from their shells. This substance consists of cellulose, lignin and a small amount of oils remaining after processing. Originally considered a waste product, husk has gained popularity as an environmentally friendly and economically viable raw material in a number of industries.
Sunflower husks are used extensively in several applications:
- Fuel. Since husks are rich in combustibles, they are excellent for making pellets and briquettes, which serve as an alternative fuel. - Construction. The husk serves as raw material for the production of insulation materials, chipboard boards and building blocks. - Agrochemistry. Sunflower husk can be used as mulch to protect soil from moisture evaporation and suppress weeds. - Animal bedding. Dried and shredded husks are used as bedding for cattle and poultry, which reduces ammonia odor and facilitates housekeeping.