Li, Yebo; Park, Stephen Y.; Zhu, Jiying - In: Renewable and Sustainable Energy Reviews 15 (2011) 1, pp. 821-826
Solid-state anaerobic digestion (SS-AD) generally occurs at solid concentrations higher than 15%. In contrast, liquid anaerobic digestion (AD) handles feedstocks with solid concentrations between 0.5% and 15%. Animal manure, sewage sludge, and food waste are generally treated by liquid AD, while...