Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (5): 277-281 doi: 10.13538/j.1001-8042/nst.22.277-281

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Electron-beam induced degradation of bisphenol A

XU Gang~* REN Hua WU Ming-Hong LIU Ning YUAN Qing TANG Liang WANG Liang   

  1. Shanghai Applied Radiation Institute,Shanghai University,Shanghai 200444,China
XU Gang, REN Hua, WU Ming-Hong, LIU Ning, YUAN Qing, TANG Liang, WANG Liang . Electron-beam induced degradation of bisphenol A.Nuclear Science and Techniques, 2011, 22(5): 277-281     doi: 10.13538/j.1001-8042/nst.22.277-281

Abstract:

E-beam degradation of bisphenol A(BPA) was carried out,under reductive condition of ethanol-water solution and oxidative condition of acetonitrile-water solution.The degradation efficiency is higher in oxidative condition than that in reductive condition,and increases with the dose but decreased with increasing initial concentration.The BPA radiolysis follows the pseudo-first-order kinetics.Adding H_2O_2,or neutral condition,does not benefit BPA degradation in oxidative conditions.Pulsed radiolysis was used to investigate mechanism of the BPA radiolysis.The rate constant for BPA reaction with OH(1.85×10~(10) L·mor~(-1)·s~(-1)) is about an order of magnitude higher than that with e_(aq)~-(1.80×l0~9 L·mor~(-1)·s~(-1)).The degradation products were analyzed by ion chromatograph.Smaller molecules such as formic acid and acetic acid were detected,indicating that ~-OH attacks the BPA molecule.The work is of significance for the practical E-beam treatment of waste water containing BPA.

Key words: Bisphenol A, E-beam irradiation, Degradation, Pulsed radiolysis