This book covers the processing, properties, and application of rice husk, also widely known as rice hull, which is an available agricultural waste in numerous rice-producing countries. These by-products are generated in significant quantities and must be treated and disposed of properly. Rice husk is an abundantly available waste material in all rice-producing countries. Approximately 120 million tons of rice husk is available each year after it has been removed from the whole rice paddy and is composed of 15% carbon, 18% ash, and 67% volatile matter. This book covers in-depth about processing and properties of rice husk and different by-products such as silica, rice husk ash, and nano fillers. This book also deals with various applications of rice husk in adsorbent, construction and building materials, composites, and nanocomposites. The book is a comprehensive reference resource for graduate students, early career researchers, scientists as well technologists working in the field of forestry, natural resources, material, and polymer sciences from concepts, fabrication, properties, and applications.