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Journal of Analytical Science and Technology

Table 4 Isotherm 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

Langmuir isotherm model

qmax

41.5

b

0.027

R2

0.9752

Freundlich isotherm model

Kf

1.91

n

1.7

R2

0.9396

D–R isotherm model

qm

12.6

β

− 0.0056

E

9.45

R2

0.9716

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