Inhibition of bromate formation by reduced graphene oxide supported cerium dioxide during ozonation of bromide-containing water

Ozone is widely used in drinking water disinfection and wastewater treatment

Bei Ye; Zhuo Chen; Xinzheng Li; Jianan Liu; Qianyuan Wu; Cheng Yang; Hongying Hu; Ronghe Wang

2019

Scholarcy highlights

  • Ozone is widely used in drinking water disinfection and wastewater treatment
  • When applied to bromide-containing water, ozone induces the formation of bromate, which is carcinogenic
  • The promoted bromate formation was attributed to increased hydroxyl radical production, as confirmed by the significant reduction in bromate yield after adding t-butanol
  • The X-ray photoelectron spectroscopy spectra results demonstrated that the Ce3+/Ce4+ ratio in xCeO2/ RGO was almost 3–4 times higher than that in pure CeO2, which might be attributed to the charge transfer effect from graphene oxide to CeO2
  • 0.36CeO2/RGO could enhance the degradation efficiency of N,N-diethyl-m-toluamide in synthetic and reclaimed water during ozonation

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