Table 2 The values of isotherm models’ parameters at different temperatures

Isotherm model

\({Q}_{{\rm{m}},\exp .}\)

240.00

253.33

263.33

270.67

Langmuir

\({Q}_{{\rm{m}},{\rm{cal}}.}\)

243.36

253.87

260.95

266.28

\({K}_{{\rm{L}}}\)

0.6921

1.1650

3.4095

6.7618

\({R}_{{\rm{Adj}}.}^{2}\)

0.9448

0.9639

0.9828

0.9778

Freundlich

\(n\)

4.718

4.994

5.379

5.737

\({K}_{{\rm{F}}}\)

94.28

105.67

118.23

128.38

\({R}_{{\rm{Adj}}.}^{2}\)

0.8837

0.8878

0.8773

0.8808

Redlich-Peterson

\({\alpha }_{{\rm{RP}}}\)

6.085

5.130

5.904

17.25

\({K}_{{\rm{RP}}}\)

935.89

912.73

1299.6

3657.3

\({{\rm{g}}}_{{\rm{RP}}}\)

0.9905

0.9198

0.9584

0.9436

\({R}_{{\rm{Adj}}.}^{2}\)

0.9583

0.9673

0.9839

0.9830