2.1 Preparation of Oil contaminated Sand
The sample of oil contaminated sand was obtained from Kuwaiti oil lake.
In order to enhance the efficiency of measurement efficacy, the process
requires the soil to be homogeneous before the washing. 1 kg of sample
was screened manually through 13.5 mm sieve for 2 min, to segregate
materials finer than gravel coarse aggregate and to separate out the
larger clumps of congealed oil residue.