Table 11: Data obtained from shale recovery test.

No. Final Dry Mass of Shale Sample Initial Mass of Shale Sample Sample Shale Recovery %
1 19.5 20 Nano DF/RPGF 97.5
2 19.82 20 DF/BFGEF 99.1
3 19.58 20 Nano DF/RPG.GEF 97.9