Including rice husk, nutshell, coconut shell, sunflower stem, palm kernel shell, bamboo, sawdust, olive shell, coffee shell, hazelnut shell, oak, jute stem, bagasse, peanut shell, plant stem, peach pit, etc.

Organic solid waste has a moisture content below 85% to 90% that can be biodegradable, and they generally have biodegradability. These wastes contain a large amount of biomass energy, and the effective utilization of this type of biomass energy is of great significance for achieving sustainable environmental and economic development.