Research Article

Regeneration of Spent Lubricant Refining Clays by Solvent Extraction

Table 5

The influence of storage time on the oil recovery.

Storage time, hIdeal oil, g/100 g (spent clay)Nonideal oil, g/100 g
(spent clay)
Total oil, g/100 g
(spent clay)

018.214.632.8
2418.114.532.6
4818.114.432.5
7218.014.432.4
16817.914.332.2