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Table 3 Kinetics parameters for Cd(II) ions adsorption onto BTW

From: Insights into brewed tea waste as a green and low-priced adsorbent for solid-phase extraction of Cd(II) ions: isotherm, kinetic, and artificial neural network approach

Cd(II) conc. (mg L−1)

PFO

R2

PSO

R2

qe exp

k1

qe cal

k2

qe cal

2.0

0.38

− 0.028

0.046

0.902

3.09

0.38

0.9999

50.0

8.90

− 0.051

2.920

0.990

0.07

8.98

0.9999

Cd(II) conc. (mg L−1)

Intraparticle diffusion model

kid,1

R2

kid,2

R2

C

2.0

0.0204

0.999

0.0015

0.975

0.318

50.0

0.9219

0.895

0.0828

0.748

6.278