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

Sorption (%)
100.0
80.0
60.0
40.0
20.0
0.0
10.0 50.0 100.0 150.0 200.0 250.0
concentration (mg/L)
500.0
Pb
Cd
Ni
Figure 3.12. Effect of initial metal ion concentration on biosorption of Pb 2+ , Cd 2+ , and
Ni 2+ by Porphyrdium cruentum (10.0 mg of biosorbent, sorption time of
60 min, solution pH of 6.0, 10.0 mL of solution with different metal ion
concentrations)
Sorption (%)
100.0
80.0
60.0
40.0
20.0
0.0
10.0
50.0
100.0
150.0
200.0
250.0
500.0
concentration (mg/L)
Pb
Cd
Ni
Figure 3.13. Effect of initial metal ion concentration on biosorption of Pb 2+ , Cd 2+ , and
Ni 2+ by Scenedesmus protuberans (10.0 mg of biosorbent, sorption time of
60 min, solution pH of 6.0, 10.0 mL of solution with different metal ion
concentrations)
3.2.4. Effect of Biomass Amount
A part of the experiments was performed by changing the biosorbent dose to
figure out how the sorption process could be affected. Different amounts of biosorbents
Ni
Cd
Pb
Ni
Cd
Pb
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