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Table 5 Isothermic parameters for the adsorption of Hg2+ on polymer samples

From: Synthesis and characterization of poly (styrene-co-acrylamide)-graft-polyanilines as new sorbents for mercuric present in aqueous hydrocarbon liquids

Model

Isothermic parameters

Parameter values

Copolymer

Aniline graft

2-Chloroaniline graft

Langmuir

Qm (mg g−1)

3.48

2.31

1.95

B

0.511

10.96

59.67

R2

0.83

0.908

0.964

Freundlich

N

0.83

1.64

2.73

Kf (mg g−1)

2.02

88.62

108.68

R2

0.997

0.983

0.986

Temkin

BT (J mol−1)

0.350

0.442

0.364

KT (L g−1)

1.072

1.057

0.692

R2

0.922

0.932

0.933