Table 7.

Heavy metal retention with 10 g Technosol.

Treatments	Volume of tailings	Cu	Cd	Zn	Pb	As
10T1	200 mL	57	45	36	87	69
Negative Control (9.9 g only soil)		43	33	25	93	60
10T1	400 mL	63	30	18	64	78
Negative control (9.9 g only soil)		47	26	23	85	66
10T2	200 mL	86	58	50	92	88
Negative control (9.7 g only soil)		22	20		36	57
10T2	400 mL	75	39	33	89	89
Negative control (9.7 g only soil)		25	18		48	55