Cr(VI)-Mediated Homogeneous Fenton Oxidation Quiz
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Questions and Answers

What is the working pH range for the Cr(VI)-mediated Fenton oxidation?

  • 3−10 (correct)
  • 5-9
  • 1-14
  • 2-12

    • What is the main advantage of replacing Fe(II) with Cr(VI) in the Fenton-like oxidation process?

  • Enhanced color removal efficiency
  • Elimination of limitations like narrow working pH range and iron sludge formation (correct)
  • Increased production of iron sludge
  • Extended reaction time

    • How is the Fenton-like oxidation of Methylene Blue (MB) dye achieved in the study?

  • By using Fe(II) instead of Cr(VI)
  • By introducing a new catalyst
  • By adjusting the pH to a specific range
  • By generating HO radicals through the disproportionation of chromium-coordinated peroxo complexes (correct)

    • What confirms the complete mineralization of the dye in the study?

    <p>Observing the decay of MB peaks by a spectrophotometer and cyclic voltammetry</p> Signup and view all the answers

    What is a notable feature regarding sludge formation in the Cr(VI)-mediated Fenton oxidation process?

    <p>No sludge formation takes place up to four cycles as the oxidation remains in the pure solution phase</p> Signup and view all the answers

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