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

Table 4

Hydraulic conductivity values in the test specimens.

Values	Test specimens
	S-DW^b	S-SL^c	S-SL-B^d	S-WO^e	S-WO-B^f
Hydraulic conductivity k (m/s)	3.61 × 10^−9	5.91 × 10^9	2.46 × 10^−9 to 1.0 × 10^10	1.93 × 10^−7	1.43 × 10^−9
Kpf/K^adw	1	1.60	0.68	53.46	0.39

K^a_pf hydraulic conductivity with the percolate fluid; K^a_dw: hydraulic conductivity with distilled water; S-DW^b: soil percolated by distilled water; S-SL^c: soil percolated by the slurry; S-SL-B^d: soil percolated by the slurry followed by the biosurfactant; S-WO^e: soil resulting from the mixture of soil and waste oil; S-WO-B^f: soil resulting from the mixture of soil and waste oil, percolated by the biosurfactant.