Perfluorooctanoic acid (PFOA) is a perfluorinated chemical that has been incorporated in many products such as firefighting foams, surface treatment agents, and surfactants. Due to its unique physicochemical properties such as high chemical and thermal stability, PFOA is resistant to many wastewater treatment techniques, including photolysis, biodegradation and hydrolysis (Bao et al., 2014). Therefore, it is necessary to develop effective treatment technology to eliminate PFOA from water. In this study, the electrocoagulation process with iron anode was investigated for the removal of PFOA from wastewater. We performed the experiments to examine the effects of current density, mixing speed and electrolyte concentration on the removal of PFOA. Kinetic studies for the removal of PFOA during electrocoagulation process were examined. Furthermore, we identified the inorganic and organic intermediates formed during electrolysis process of PFOA. Finally, we proposed the degradation mechanisms during electrocoagulation of PFOA.