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

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Algae Metal ion Ka
Dunaliella
salina
Oocystis sp.
Porphyridium
cruentum
Scenedesmus
protuberans
Pb 2+
Cd 2+
Ni 2+
Pb 2+
Cd 2+
Ni 2+
Pb 2+
Cd 2+
Ni 2+
Pb 2+
Cd 2+
Ni 2+
Table 3.9. Isotherm constants for Pb 2+ , Cd 2+ , and Ni 2+ sorption by algae.
Langmuir Freundlich Dubinin-Radushkevich
Cm
(mol/g)
R2 n Kf R2
Cm
(mol/g)
E
(kJ/mol)
0.0757 0.0034 0.7136 0.6746 0.8915 0.5305 0.0383 9.1 0.5808
0.0841 0.0025 0.8548 0.4519 0.0423 0.8720 0.0055 11.2 0.8788
0.0967 0.0013 0.9982 0.3916 0.0140 0.8628 0.0038 11.2 0.9297
0.1215 0.0022 0.8148 0.3282 0.0115 0.7352 0.0025 12.9 0.7896
0.0486 0.0007 0.9958 0.4327 0.0105 0.8989 0.0020 11.2 0.9386
0.6659 0.0006 0.9365 0.2450 0.0027 0.9227 0.0011 15.8 0.9151
2.6667 0.0005 0.9839 0.3239 0.0086 0.9732 0.0016 15.8 0.9960
0.0875 0.0006 0.9904 0.5581 0.0232 0.9745 0.0026 9.1 0.9851
0.0731 0.0008 0.9836 0.3967 0.0077 0.8965 0.0019 11.2 0.9387
0.0762 0.0060 0.7177 0.2890 0.0092 0.6710 0.0016 15.8 0.9960
0.0912 0.0006 0.9900 0.4500 0.0133 0.9554 0.0021 11.2 0.9558
0.8107 0.0006 0.9562 0.2042 0.0020 0.8103 0.0009 15.8 0.8614
R2