活性炭負載金屬氧化物催化臭氧氧化甲硝唑

楊文清, 李旭凱, 李來勝, 張秋雲, 呂向紅, 曾寶強

Research output: Contribution to journalArticles

Abstract

採用浸漬法製備了Fe、Ni、Ag、Ce 4種金屬氧化物負載活性炭(MeOx/AC)催化劑,並用於甲硝唑(MNZ)的催化臭氧氧化降解,以考察其催化活性。在 20 mg/h的臭氧投加量下,催化劑的加入(0.5 g)對MNZ(C₀5 mg/L;pH = 5.5)的氧化和礦化有明顯改善,其中NiOx/AC催化劑表現出較好的催化活性,反應 60 min後,MNZ和TOC的去除率分別達 87%和30%,較AC催化臭氧氧化(80%和26%)及單獨臭氧氧化(70%和10%)有所提高。叔丁醇或硝酸根的加入對MNZ的降解起抑制作用。
Activated carbon-supported(Fe, Ni, Ag, Ce)metallic oxide catalyst (MeOx/AC) was prepared by impregnation. The activity of four kinds of MeOx/AC in the catalytic ozonation of aqueous phase metronidazole (MNZ) was evaluated. In the 20 mg/h of ozone dosage, the oxidation and mineralization of MNZ (C0=5 mg/L; pH=5.5) was significantly improved in presence of catalyst (0.5 g). NiOx/AC provides preferable catalytic activity. The oxidation of MNZ and its TOC removal rates were 87% and 30% at 60 min, compared with AC catalytic ozonation (80% and 26%) and ozonation alone (70% and 10%). Addition of tert-butanol or nitrate showed inhibition on MNZ degradation. Copyright © 2011 環境工程學報.
Original languageChinese
Pages (from-to)763-766
Journal環境工程學報
Volume5
Issue number4
Publication statusPublished - Apr 2011

Citation

楊文清、李旭凱、李來勝、張秋雲、呂向紅和曾寶強(2011):活性炭負載金屬氧化物催化臭氧氧化甲硝唑,《環境工程學報》,5(4),頁763-766。

Keywords

  • 催化臭氧氧化
  • 甲硝唑
  • 活性炭
  • 金屬氧化物
  • 總有機碳
  • Alt. title: Catalytic ozonation of metronidazole in presence of activated carbon supported metallic oxide catalyst
  • Catalytic ozonation
  • Metronidazole
  • Activiated carbon
  • Metallic oxide
  • Total organic carbon