Research Article
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 |
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