Table 1.

Composition of the

source material.

	Original Cu process solution (pH 1) (mg/L)	After dilution to 0.12 M Cu2+ (pH 1) (mg/L)	After dilution to 0.06 M Cu2+ (pH 1) (mg/L)	After dilution to 0.03 M Cu2+ (pH 1) (mg/L)
Cu	44,000.00	7620.00	3810.00	1905.00
Ni	19,300.00	3342.41	1671.20	835.60
As	23,300.00	4035.14	2017.57	1008.78
Sb	196.00	33.94	16.97	8.49
Bi	220.00	38.10	19.05	9.53
Fe	165.00	28.62	14.31	7.16
Al	20.00	3.46	1.73	0.87
Ag	< 5.00	< 0.87	< 0.43	< 0.22
Au	< 5.00	< 0.87	< 0.43	< 0.22
Pt	< 5.00	< 0.87	< 0.43	< 0.22
Pd	< 5.00	< 0.87	< 0.43	< 0.22
Te	< 10.00	< 1.73	< 0.87	< 0.43
Se	< 10.00	< 1.73	< 0.87	< 0.43
Co	< 10.00	< 1.73	< 0.87	< 0.43
S	80,300.00	13,906.50	6953.25	3476.63