Environmental Engineering Reference
In-Depth Information
a
pH ~9
conc 1
conc 2
conc 3
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
Cd
Cr
Cs
Cu
Mo
Ni
Pb
Sn
V n
b
pH = 7.0
100%
50%
0%
Cd
Cr
Cs
Cu
Mo
Ni
Pb
Sn
V n
-50%
conc 1
conc 2
conc 3
-100%
-150%
c
pH = 5.6
100%
0%
Cd
Cr
Cs
Cu
Mo
Ni
Pb
Sn
V n
-100%
-200%
-300%
conc 1
conc 2
conc 3
-400%
-500%
Fig. 1
Removal capacity of blast-furnace sludge for metals in different concentrations stirred in
beakers (24 h) (
a
) pH ~9, (
b
) pH = 7.0 and (
c
) pH = 5.6
an extremely good capacity for sorption of lead, up to 80 mg/g
[7]
. The sorption
capacity for Cadmium was slighter better than Cs for solutions in the 0.050-0.50
mg/L range. The figures in the table are not the maximum capacities of the material,
