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The degradation efficiency of bisphenol A (BPA) in aqueous solution was investigated in UV 254 nm combined with potassium ferrate [ UV/Fe(VI) ] process・ The main active components for BPA oxidation were identified, and the possible degradation pathways of BPA were also proposed・ The results showed that the synergistic degradation of BPA in UV/Fe(VI) process followed the pseudo second-order kinetics, and its degradation rate was enhanced by 98. 94% and 67. 17% compared with single UV and Fe(VI), respectively・ The removal rate of BPA reached 91 ・ 46% when the BPA concentration was 220 |jimol/L, Fe(VI) concentration was 50 |jimol/L, the system temperature was 25 °C and pH 6. creasing temperature and pH, the presence of humic acid and CO| can enhance the degradation efficiency. The dominated reactive oxidation species in UV/Fe(VI) system were Fe(V), Fe(IV), superoxide radicals and hydroxyl radicaL The degradation of BPA mainly underwent the demethylation, hydroxylation and ring opening reactions in UV/Fe(VI) system. [ABSTRACT FROM AUTHOR]

The basic reviewed the research status of different types of metal catalysts, such as transition metal ions, zero-valent metals and bimetals, activated PMS/PDS for the degradation of bisphenol A(BPA), and also discussed the degradation mechanism of BPA removal by bimetallic catalyst. These include synergy between bimetals, and the important role of oxygen vacancies and surface hydroxyl radical. The paper analyzed the influencing factors in the activation process, water matrix conditions, reusability and stability of the catalyst. The paper looks forward to the future research on the degradation of bisphenol A by metal catalysts. [ABSTRACT FROM AUTHOR]