Assessment of the formation of inorganic oxidation by-products during the electrocatalytic treatment of ammonium from landfill leachates

► Ammonium removal by electrochemical treatment with BDD electrodes. ► Transformation of ammonium into nitrogen gas and nitrates. ► Formation of chloride by-products including free chlorine, chlorate and perchlorate. ► Efficient conditions that minimize or even avoid the formation of undesirable by-products.