Regeneration of Spent Lubricant Refining Clays by Solvent Extraction

Table 2

Effect of petroleum ethers with different boiling range.

Solvent	Ideal oil recovery, %	Nonideal oil recovery, %	Total oil recovery, %
A: petroleum ether (60–90°C)	50.36 ± 2	37.25 ± 0.5	87.61 ± 0.5
B: petroleum ether (90–120°C)	55.12 ± 2	42.61 ± 0.5	97.73 ± 0.5