Fig. 2From: Variations in the substrate composition and microbial community structure in the anaerobic fermentation process using the green algae Enteromorpha proliferaVariations of typical chemical properties in biogas fermentation process. a VFAs content substrate and pH value of substrate; b OC and ON content in slurry; c TS, OC, ON and CF content in residue; d biogas, methane and methane content in reactor. The definition of abbreviations: VFAs, volatile fatty acids; OC, organic carbon; ON, organic nitrogen; TS, total solid; CF, crude fireBack to article page