Biodegradability enhancement of wastewater containing cefalexin by means of the electro-Fenton oxidation process

► The electro-Fenton process effectively enhanced the biodegradability of cefalexin. ► The optimum conditions for the electro-Fenton process were identified. ► A comprehensive analysis of CLX biodegradability change along the EF was assessed. ► The oxidation process of CLX by EF can be divided into four stages.