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August 22, 2026Environmental Chemistry LettersOpen Access

Self-destruction of a tire-derived quinone pollutant by peroxyacetic acid

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Authors

ACAyoung ChoiCHChangseok HanÉLÉric Lichtfouse

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Overview

Experimental study demonstrates self-induced degradation of toxic 6PPD-quinone by peroxyacetic acid in water, suggesting a catalyst-free strategy for environmental remediation.

Key Points

  • To investigate whether the toxic tire-derived contaminant 6PPD-quinone can trigger its own degradation through direct reaction with peroxyacetic acid without external energy input.
  • Conducted batch oxidation experiments at near-neutral pH using varying concentrations of peroxyacetic acid.
  • Evaluated degradation pathways, electron transfer, and semiquinone radical generation under conditions with and without ultraviolet light irradiation.
  • Reaction of 6PPD-quinone with peroxyacetic acid triggered radical amplification via semiquinone radical intermediates, achieving over 70% contaminant removal at 65 µM peroxyacetic acid.
  • Achieved complete degradation of 6PPD-quinone within 60 minutes at 263 µM peroxyacetic acid without external energy.
  • Ultraviolet light irradiation was not required for semiquinone radical formation but enhanced overall removal kinetics by generating supplementary radicals.

Cite This Study

Choi et al. (2026) studied this question.

synapsesocial.com/papers/6a895ed9ca7ade938187d06bhttps://doi.org/10.1007/s10311-026-01921-3
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