Table 2 Langmuir, Freundlich, Temkin, and Redlich-Peterson isotherm parameters for the adsorption of 3-Nph on CM-HC at different solution pH.

From: Deep learning artificial neural network framework to optimize the adsorption capacity of 3-nitrophenol using carbonaceous material obtained from biomass waste

Isotherm Model

Parameters

pH

3

6

8

Langmuir

qmax (mg/g)

100.523

128.625

87.284

KL(L/mg) (10−2)

2.222

0.018

0.022

R2

0.9805

0.9974

0.9974

N

2.738

2.393

2.806

Freundlich

KF (mg/g)(L/mg)1/n

10.487

9.945

9.255

R2

0.9767

0.9634

0.9454

Temkin

BT (L/mg)

15.966

22.476

15.636

AT (KJ/mol)

0.654

0.363

0.371

R2

0.9768

0.9865

0.9954

Redlich–Peterson

αRP (L/mg)

0.175

0.036

0.036

KRP (L/g)

4.940

2.760

2.234

β

0.794

0.916

0.944

R2

0.9958

0.9985

0.9985

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