Table 9 Langmuir and Freundlich constants for metal ion removal.

From: Enhanced metal ion adsorption using ZnO-MXene nanocomposites with machine learning-based performance prediction

Isotherm models

Constants

Metal ions

Chromium (Cr)

Cadmium (Cd)

Lead (Pb)

Arsenic (As)

Langmuir

Qmax (mg/g)

107.76

6.65

58.45

36.62

KL (L/mg)

4.14

3.33

1.44

6.16

R2

0.92

0.96

0.84

0.87

Freundlich

KF

6.92

1.57

5.09

4.01

1/n

0.054

0.144

0.07

0.083

R2

0.98

0.99

0.96

0.96

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