Recovery of Cerium Dioxide from Spent Glass-Polishing Slurry and Its Utilization as a Reactive Sorbent for Fast Degradation of Toxic Organophosphates

Figure 4

Time dependencies for the degradation of fenchlorphos on CeO₂ annealed at different temperatures. Recovered cerium oxide annealed at temperature (a) 200°C; (b) 300°C; (c) 400°C; (d) 500°C; (e) 600°C; (f) 700°C; (g) 800°C; (h) 900°C. (i) Pure cerium oxide annealed at 400°C.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)