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

Table 3.3. Competitive biosorption of Pb 2+ + Cd 2+ + Ni 2+ by Dunaliella salina (10.0 mL
solution of different mixed-metal ion concentration, solution of 6.0, and
sorption time as 60 min)
% Sorption
Pb 2+
Cd 2+
Ni 2+
Initial
concentration of
Pb 2+ + Cd 2+ + Ni 2+
(mg/L) Single Mixed Single Mixed Single Mixed
10.0 92.6 ± 0.0 97.9 ± 0.2 95.2 ± 0.6 100.0 ± 0.0 87.2 ± 0.1 91.3 ± 0.3
50.0 96.5 ± 0.5 100.0 ± 0.0 98.2 ± 1.6 79.3 ± 1.7 76.3 ± 0.7 58.7 ± 1.0
100.0 96.9 ± 0.5 100.0 ± 0.0 81.8 ± 1.5 50.9 ± 4.0 58.7 ± 1.1 33.8 ± 2.5
Table 3.4. Competitive biosorption of Pb 2+ + Cd 2+ + Ni 2+ by Oocystis sp. (10.0 mL
solution of different mixed-metal ion concentration, solution pH of 6.0,and
sorption time as 60 min)
% Sorption
Pb 2+
Cd 2+
Ni 2+
Initial
concentration of
Pb 2+ + Cd 2+ + Ni 2+
(mg/L) Single Mixed Single Mixed Single Mixed
10.0 97.8 ± 0.8 100.0 ± 0.0 77.4 ± 0.4 94.0 ± 0.0 94.3 ± 0.2 77.8 ± 0.1
50.0 99.3 ± 0.3 98.9 ± 0.1 73.4 ± 2.2 33.7 ± 0.5 46.0 ± 2.3 27.4 ± 0.6
100.0 98.2 ± 1.0 92.8 ± 0.6 50.5 ± 0.6 14.6 ± 1.2 28.1 ± 1.0 13.3 ± 1.1
Table 3.5. Competitive biosorption of Pb 2+ + Cd 2+ + Ni 2+ by Porphyridium cruentum
(10.0 mL solution of different mixed-metal ion concentration, solution pH of
6.0, and sorption time as 60 min)
% Sorption
Pb 2+
Cd 2+
Ni 2+
Initial
concentration of
Pb 2+ + Cd 2+ + Ni 2+
(mg/L) Single Mixed Single Mixed Single Mixed
10.0 99.6 ± 0.1 99.7 ± 0.3 67.0 ± 0.2 73.5 ± 0.1 73.3 ± 1.0 61.7 ± 0.2
50.0 96.3 ± 1.5 92.1 ± 0.5 55.1 ± 1.0 26.0 ± 0.7 45.3 ± 1.0 28.1 ± 0.7
100.0 89.4 ± 2.6 74.2 ± 2.8 42.1 ± 0.6 8.3 ± 5.0 34.5 ± 1.0 13.3 ± 1.8
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