Characterization of Metakaolin from Wassa Kaolin and Its Potential as Adsorbent for the Regeneration of Used Engine Lubrication Oil

Table 1

XRF results (wt%) of kaolin and metakaolin: ANOVA test.

Oxides	Kaolin	Metakaolin	value
SiO2	48.69 ± 0.10	51.70 ± 1.00	0.34
Al2O3	39.70 ± 0.10	44.60 ± 0.1	0.036
Fe2O3	0.29 ± 0.005	2.03 ± 0.02	7.47 × 10^−5
K2O	0.54 ± 0.01	2.43 ± 0.01	2.79 × 10^−5
Na2O	1.21 ± 1.00	0.03 ± 0.01	0.35
MgO	0.12 ± 0.005	0.04 ± 0.01	0.01
TiO2	0.274 ± 0.005	0.02 ± 0.01	0.02
LOI	11.73