S. No Experimental parameter Value 1 Amount of sand taken 10 gm 2 Volume of oil added 10ml 3 Volume of RL added 10 ml 4 Vortexingtime 5 min 5 Centrifugation speed 6000 rpm 6 Hexane used 10 ml 7 Oil recovered 3.1 ml 8 Percentage of oil recovered 31%

Table 7: Percentage recovery of oil from sludge.