BIOSORPTION OF Pb2+, Cd2+, & Ni2+ FROM WATERS BY ...

metals ions was started to pass the solution. This pheneomenon started to take place at
the tenth successive loading for Cd 2+ and at the ninth successive loading for Ni 2+ were
performed.
Sorption (%)
100.0
80.0
60.0
40.0
20.0
0.0
1 2 3
successive loadings
4 5
Figure 3.20. Repetitive biosorption of Pb 2+ , Cd 2+ , and Ni 2+ by Dunaliella salina (10.0
mL solution of 10.0 mg/L metal ion concentration, solution pH of 6.0,
sorption time of 30 min., and successive loadings)
Sorption (%)
100.0
80.0
60.0
40.0
20.0
0.0
1 2 3 4 5
successive loadings
Figure 3.21. Repetitive biosorption of Pb 2+ , Cd 2+ , and Ni 2+ by Oocystis sp. ( 10.0 mL
solution of 10.0 mg/L metal ion concentration, solution pH of 6.0, sorption
time of 30 min., and successive loadings)
Pb
Cd
Ni
Pb
Cd
Ni
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