Fig. 4

Impact of Aso limonite to bacterial/archaeal activities and bacterial community in WSS at the end of anaerobic digestion process; a proportion of active bacteria and archaea determined by the quantitative real-time PCR and b relative abundant percentages of dominant bacterial community indicated by Order, Family, and Genus level (if available). Error bars indicate standard errors (n = 3). Asterisk (*) indicate the significant difference by the addition of Aso limonite