articleEnvironmental Science & TechnologyFeb 25, 2013Closed access

Production of Sulfate Radical from Peroxymonosulfate Induced by a Magnetically Separable CuFe 2 O 4 Spinel in Water: Efficiency, Stability, and Mechanism

TZTao ZhangHZHaibo ZhuJCJean‐Philippe Croué

King Abdullah University of Science and Technology

PubMed
Indexed incrossrefpubmed

Abstract

A simple, nonhazardous, efficient and low energy-consuming process is desirable to generate powerful radicals from peroxymonosulfate (PMS) for recalcitrant pollutant removal. In this work, the production of radical species from PMS induced by a magnetic CuFe(2)O(4) spinel was studied. Iopromide, a recalcitrant model pollutant, was used to investigate the efficiency of this process. CuFe(2)O(4) showed higher activity and 30 times lower Cu(2+) leaching (1.5 μg L(-1) per 100 mg L(-1)) than a well-crystallized CuO at the same dosage. CuFe(2)O(4) maintained its activity and crystallinity during repeated batch experiments. In comparison, the activity of CuO declined significantly, which was ascribed to the…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Radical
  • Spinel
  • Decomposition
  • Crystallinity
  • Hydroxyl radical
  • Stoichiometry
  • Oxide
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