Research Article

Insight into Equilibrium and Kinetics of the Binding of Cadmium Ions on Radiation-Modified Straw from Oryza sativa

Table 3

Equilibrium models studied at 303 K.

ModelEquationParameters

Langmuir (mg g−1)
(L mg−1)


RMSE
20.70
0.0409
0.7576–0.2381
0.9855
0.65

Freundlich (mg g−1)


RMSE
1.2018
1.6575
0.9128
1.22

Temkin (L mg−1)
(RT/b, kJ mol−1) 

RMSE
1.9022
2.1612
0.974
0.30

Harkin-Jura


RMSE
2.4606
1.1722
0.6002
1.14

D-R (mg g−1)

(kJ mol−1)

RMSE
5.8532

0.707
0.814
0.97