-renewable sources, is then presented. The energy sources are classified as sun-dependent energy sources (SDES) and sun …

Mixing in an anaerobic digester keeps the solids in suspension and homogenizes the incoming feed with the active … microbial community of the digester content. Experimental investigations have shown that the mixing mode and mixing intensity … have direct effects on the biogas yield even though there are conflicting views on mixing design. This review analyzes and …