Rice Husk
*The hard outer shell that covers rice grains.
* Uses: Fuel for boilers, raw material for biochar/silica extraction, compost additive, building materials (insulation, panels), and soil amendment.
Rice Bran
*The nutrient-rich outer layer of brown rice produced during milling.
* Properties: High in oil, fiber, vitamins (especially B and E), and antioxidants.
* Uses: Animal feed, edible rice-bran oil, fertilizer, cosmetics, biofuel production, and organic soil amendments.
Carbonated Rice Husk / Rice Husk Biochar
(Usually referred to as rice husk biochar or carbonized rice husk (CRH))
* What it is: Rice husk that has been partially burned or pyrolyzed in low-oxygen conditions.
* Uses: Soil conditioner, compost enhancer, filtration media, construction material filler, carbon sequestration, and as a growing medium in horticulture.