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Table 3 Thermodynamic parameters of fluoride ion adsorption on NVNC

From: Removal of fluoride from polluted waters using active carbon derived from barks of Vitex negundo plant

Parameter

ΔH (kJ/mol)

ΔS (J/mol/K)

 

ΔG (kJ/mol)

 

R 2

Temperature (K)

  

303

313

323

0.999

NVNC

27.11

98.27

−2.6658

−3.6485

−4.6312

Â