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

Table 1

Elemental composition of waste polishing sludge and recovered CeO₂ (expressed as respective oxides).

Element	Polishing sludge (% wt.)	Recovered CeO2 (% wt.)
CeO2	8.85	92.8
La2O3	1.49	3.75
SiO2	57.6	0.69
Al2O3	1.00	—
Na2O	13.3	0.07
K2O	6.89	0.06
CaO	2.94	0.28
MgO	0.30	0.08
ZnO	1.98	—
Fe2O3	0.06	—

Dry mass basis.