Heterogeneous Catalytic Ozonation of Sulfamethoxazole in Aqueous Solution over Composite Iron–Manganese Silicate Oxide

Guoying Gao, Jing Kang, Jimin Shen, Zhonglin Chen, Wei Chu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Composite iron–manganese silicate oxide (FMSO) was synthesized and used as a heterogeneous catalyst for the ozonation of sulfamethoxazole. Results showed that FMSO/O3process significantly increased the TOC removal efficiency from 27% (sole ozonation) to 79.8%. Generated intermediates exhibited much higher adsorption affinity on FMSO than sulfamethoxazole. Presence of FMSO could accelerate the mass transfer of ozone, adsorb a certain amount of ozone on its surface, and subsequently decompose ozone into hydroxyl radical. Neutral charge surface of FMSO was more favorable to interact with the ozone molecules. FMSO maintained a good catalytic activity after several repeated use and revealed low metal ion leaching during ozonation.
Original languageEnglish
Pages (from-to)24-32
Number of pages9
JournalOzone: Science and Engineering
Volume39
Issue number1
DOIs
Publication statusPublished - 2 Jan 2017

Keywords

  • Catalytic Ozonation
  • Composite Iron–Manganese Silicate Oxide
  • Hydroxyl Radical
  • Ozone
  • Sulfamethoxazole

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry

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