528
R. Sato et al.
Fig. 10 Effect of molar ratio
[Ca/(1.5As + 3.0Te +
1.0Se)] on As concentration
in filtrate
Table 6 Chemical composition of leachate after removal arsenic
Element
As
Te
Se
Sn
Pb
Sb
Concentrations (mg/L)
41
29
97
<10
<10
<10
Fig. 11 Effect of molar ratio
(Fe/Se) on Se concentration
in filtrate
Fig. 12 Effect of molar ratio
(Fe/Se) on As concentration
in filtrate