Table 2 Adsorption parameters of Pb2+ ions on AC-Ni/Al-LDH composite at 25 °C.

From: Synergistic effect of rice husk-derived activated carbon modified by Ni/Al-layered double hydroxides for lead removal from industrial wastewater

Adsorption model

AC

AC-Ni/Al-LDH

qe(Exp) (ppm)

4.6

5.1

Lm isotherm

 KL (ppm)

12.8

33.9

 R2

0.8839

0.9794

Fm isotherm

 KF (ppm)

43.2

48.4

 n

1.35

1.49

 R2

0.9982

0.9999

Tm isotherm

 R²

0.9257

0.9627

 A

2.71

2.72

 B

0.9554

0.8019

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