Figure 4.
TEM images of (a, b) native E. coli cells, and treated cells with (c, d) FeSO4 and (e, f) nano-Fe0 (> 3 log inactivation, [Fe(II)] = 0.1 mM for (c, d), [nano-Fe0] = 10 mg/L for (e, f), pH = 8.0, 2 mM carbonate buffer, treatment time = 30 min under deaerated condition)