Fig. 6: SEM images of CaCO3 scale at different magnifications.
From: Nanosilica modified with polyaspartic acid as an industrial circulating water scale inhibitor
a, a’ Without antiscalant, b, b’ with 10 mg/L PASP, c, c’ with 30 mg/L PASP, d, d’ with 10 mg/L SiO2-NH2/PASP, e, e’ with 30 mg/L SiO2–NH2/PASP.
