Table 3: Thermodynamic parameters derived from Langmuir isotherm for adsorption of fluconazole on mild steel in 1 M HCl at 298 K.

MethodEquilibrium constant 
( ) M−1
Free energy of adsorption 
( ) kJ 

Tafel28853.890.995−35.39
EIS7346.650.997−32.01