Table 1 Adsorption isotherm parameters.

From: Efficient defluoridation of high-fluoride water using rare earth-based adsorbents: adsorption performance, mechanism, and kinetics

T(°C)

Langmuir

Freundlich

Qmax(mg/g)

KL

R2

RL

KF

n

R2

20

118.43

0.107

0.998

0.058651

18.943

1.986452

0.946

30

114.47

0.093

0.991

0.06689

16.901

2.01001

0.94

40

110.535

0.067

0.974

0.090498

14.264

2.199881

0.941