Figure 6
From: Improvements on activated sludge settling and flocculation using biomass-based fly ash as activator
SEM images of the surface of sludge flocs before EPS extraction in R1 (a,b) R2 and after EPS extraction in (c) R1 and (d) R2. R1 functioned as a control reactor, and R2 functioned as the sample reactor with 0.5 g/L of fly ash dosage.
