Ag

Zn

Cu

Fe

Na₂S (g)

pH

Feed barren solution (ppm)

0.1

184

636

4

0

10.95

Solution 1 (ppm)

0

22

31

2

1.0

5.5

Precipitate 1 (%)

114

11.90

51.70

1.0

-

-

Solution 2 (ppm)

0

8

0

0

1.0

5.0

Precipitate 2 (%)

119

13.4

51.27

1.0

-

-

Solution 3 (ppm)

0

32

0

0

1.0

4.5

Precipitate 3 (%)

138

9.92

56.34

0.9

-

-

Solution 4 (ppm)

0

54

0

0

1..0

4

Precipitate 4 (%)

118

1.49

62.68

1.1

-

-

Solution 5 (ppm)

0

40

0

0

1.0

3.0

Precipitate 5 (%)

129

9.53

62.24

1.1

-

-

Solution 6 (ppm)

0

134

0

0

1.0

2.5

Precipitate 6 (%)

106

11.24

60.5

0.9

-

-