Degradation of bisphenol AF in water by periodate activation with FeS (mackinawite) and the role of sulfur species in the generation of sulfate radicals

Abstract The heterogeneous catalyst Mackinawite (FeS) was applied to activate periodate (IO4?) degrade endocrine disruptors bisphenol AF (BPAF). This study investigated the influence of FeS dosage, BPAF concentration, initial pH value and inorganic ions on degradation by FeS/IO4? system. results showed that effectively degraded acidic exhibited higher efficiency in compared with alkaline neutral conditions. Furthermore, dramatically promoted presence Cl? SO42?, whereas CO32? inhibited degradation. radical scavenging tests EPR indicated singlet oxygen (1O2), superoxide radicals (O2 ?) SO4 ? were committed BPAF, among which O2 ?, 1O2 predominant radicals. separate experiments Fe(?) participated activation periodate. effects sulfur species (including S2?, SO32?) system studied. quenching suggested S2? SO32? responsible for producing ?. findings this elucidated an approach removal micro-pollutants water environment through FeS.