Effect of oil leaching on the soil, coastal, marine and groundwater in Kuwait
Abstract
The leachability of oil from un-stabilized layer of soilallows the oil toeasily pass through the soil strata. This may have an impact on the physical properties of soil either in coastal or land zone, such as the shear strength parameters and the compressibility parameters.Also, chemical properties (adsorption and retention of heavy metals). Column test was used with uncontaminated soil and
statured with five different types of oil (A, B, C, D and E)to mimicsitu condition. The direct shear test results show reduction in the angle of friction on oil types due to lubrication, and no significant change in the cohesion and consolidation parameters. Finally, the retention profile for all samples shows that type C has most retention in soil layers for As, Cd, Ni, Pb and Zn. All metals with different oil type have high concentration on the top layer of soil and up to 50 mm depth. These results will cause highimpact on the coastal environment and will increase the ecological risk.
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