Kinetics of Au (III) extraction by DBC from hydrochloric solution using Lewis cell

►The kinetic study was performed by Lewis cell and data were treated by Flux method. ►The rate of extraction expressed as: F = 100.88[AuCl4−]1.25[H+]−0.22[DBC]0.4. ►∆H± and ∆S± value was obtained 11.66 kJ/mol and −187.66 J/mol K respectively. ►Ea < 20 kJ/mol so the extraction process is diffusion controlled.