Hydraulic Conductivity of Compacted Laterite Treated with Iron Ore Tailings

Table 5

Physical and chemical properties of the leachate.

Parameter	Concentration
pH	7.8
Biochemical oxygen demand (BOD5)	39.3
Chemical oxygen demand (COD)	136
BOD5/COD (ratio)	0.29
Calcium, Ca (mg/L)	375
Lead, (mg/L)	0.02
Copper, Cu (mg/L)	0.17
Manganese, Mn (mg/L)	29.0
Zinc, Zn (mg/L)	5.04
Chromium, Cr (mg/L)	0.05
Nickel, Ni (mg/L)	0.36
Sodium, Na (mg/L)	33
Magnesium, Mg (mg/L)	113
Potassium, K (mg/L)	120
Iron, Fe (mg/L)	80
Cadmium, Cd (mg/L)	0.02