Rice husk, also known as rice hull, is the outer layer of the rice grain. Composed primarily of cellulose, lignin, and mineral ash, rice husk is a valuable byproduct with various applications. It is widely used in animal feed due to its high fiber content, making it a nutritious addition to livestock diets. Additionally, rice husk is employed in energy production processes, including combustion and gasification, where it serves as a renewable and sustainable energy source. Its diverse uses highlight its importance in both agriculture and energy sectors.