Application of a Yeast Biosurfactant in the Removal of Heavy Metals and Hydrophobic Contaminant in a Soil Used as Slurry Barrier

Table 1

Test specimens and percolates used in the experiments.

Identification of test specimens	Percolate types
NS	Natural soil (soil before percolation of contaminants)
S-DW	Soil percolated by distilled water
S-SL	Soil percolated by the slurry
S-WO	Soil resulting from the mixture of soil and waste oil of car engine
S-WO-B	Soil resulting from the mixture of soil and waste oil of car engine, percolated by the biosurfactant
S-SL-B	Soil percolated by the slurry followed by the biosurfactant