Sample

Particle Size µm

Freundlich Constant

Temperature K

283

303

313

322

Kaolin

53

K_f

419.75

404.57

309.2

285.759

n

1.315

1.207

1.331

1.360

R²

0.913

0.938

0.897

0.864

Kaolin-Urea

53

K_f

371.53

297.85

229.08

186.638

n

1.680

1.980

2.624

2.923

R²

0.860

0.876

0.867

0.877

Kaolin

106

K_f

319.15

1127.19

1879.31

434.51

n

1.751

0.536

0.379

1.360

R²

0.880

0.983

0.970

0.864

Kaolin-Urea

106

K_f

263.02

224.38

207.01

202.301

n

1.633

1.908

1.754

1.481

R²

0.885

0.874

0.924

0.920