Table 2 Langmuir and Freundlich isotherm models parameters for adsorption of phosphate on the RGO-Zr, Zr(OC3H7)4 and GO at high initial phosphate concentrations.

From: Adsorption of phosphate in water using one-step synthesized zirconium-loaded reduced graphene oxide

Sample

Langmuir model

Freundlich model

qm (mg/g)

kL (L/mg)

R 2

k F

1/n

R 2

RGO-Zr

27.71

17.19

0.9998**

22.56

0.21

0.8631**

Zr(OC3H7)4

23.42

85.40

0.9999**

24.02

0.15

0.9558**

GO

7.49

0.50

0.9734**

2.73

0.35

0.9511**

  1. Note: ** means correlation analyses of the data by SPSS 19.0 resulted in equations with P < 0.01 (two sides), and revealing the extremely significant correlation between qe and Ce.
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