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Table 1 Calculated Freundlich, Temkin and Langmuir Isotherm constants for the PQ and PE Adsorption onto ACBGNS

From: Experimental and computational studies on activated Bambara groundnut (Vigna subterranean) hulls for the adsorptive removal of herbicides from aqueous solution

Isotherm model

Parameter

Pendimethalin

Paraquat dichloride

Langmuir

Qo (mg/g)

52.63

142.86

KL (L/mg)

0.056

0.0107

RL

0.186

0.379

R2

0.976

0.993

Freundlich

1/n

1.486

1.190

N

0.673

0.840

kf

3.689

1.923

R2

0.909

0.978

Temkin

AT (L/mg)

0.6358

0.376

bT

223.81

201.76

B

11.07

12.28

R2

0.780

0.971