Wet biomass typically includes organic waste from the farming and food industries. It can include also municipal waste, microalgae, and other content material with higher moisture value that is not frequently recycled. The feedstock is usually pumped, heated, and stirred. Dry Biomass, on the other hand, contains the dry matter typically from fields and dried animal manure (lacks or excluding water) which can be stacked in the dry anaerobic digester and have process liquid percolating through the biomass.