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

Table 3

Chemical characterization of the natural soil.

Determination	Values
pH in H2O	5.20
pH in KCl	4.04
Organic matter (g/Kg)	0.00
Extractable aluminum (Al^+++)	0.35
Exchange Ca^++ (cmol/kg)	0.00
Exchange Mg^++(cmol/kg)	5.80
Exchange Na^+ (cmol/kg)	7.60
Exchange K^+ (cmol/kg)	0.50
sodium saturation (%)	54.50
Sum of cations (cmo/kg)	13.94
Extractable hydrogen (H^+) (cmol/kg)	5.85
Cation exchange capacity (cmol/kg)	20.14
Saturation of base (%)	69.21
Fe2O3 in the sulfuric extract (%)	4.63
SiO2 in the fine soil (%)	73.0
Al2O3 in the sulfuric extract (%)	13.0
Water in the saturated extract (%)	44.2
Electric conductivity in the saturated extract (μS/cm)	0.012
Specific surface (m²/g)	14.7