The removal efficiencies and mechanism of aniline degradation by peroxydisulfate activated with magnetic Fe-Mn oxides composite

Abstract The Fe-Mn oxides composite prepared by a chemical co-precipitation method was used as heterogenous peroxydisulfate catalyst for the decomposition of aniline. This study investigated mechanism aniline degradation PDS activated with catalyst. Reactive species resulting in via radical quenching experiments different scavengers, including methanol, tert-butyl alcohol, EDTA and sodium azide. Based on made here, it is speculated that predominant reactive responsible may be holes singlet molecular oxygen rather than SO4·− ·OH radicals. compounds catalyst/peroxydisulfate system put forward. three possible intermediates were high performance liquid chromatography-mass spectrometry, two pathways proposed.