Treatmet

AGJ concentration (%)

sulfuric acid concentration (% w/w)

T1

1.5

0.10

T2

1.5

0.25

T3

1.5

0.40

T4

2.5

0.10

T5

2.5

0.25

T6

2.5

0.40

T7

3.5

0.10

T8

3.5

0.25

T9

3.5

0.40