110
M. Felix et al.
Fig. 2 Laboratory scale column setup
0
0.2
0.4
0.6
0.8
1
1.2
1.4
2
4
6
8
1 0
Conc.Mg/L
Days
Lead
Sample
Control
Fig. 3 Concentration of lead extracted through column test
0
2
4
6
8
10
12
2
4
6
8
1 0
pH level
days
pH
Sample pH
control pH
Fig. 4 pH level of the samples