Decolorization of dyes using UV/H2O2 photochemical oxidation

Yiqi Yang, David Travis Wyatt, Michael Bahorsky

Research output: Contribution to journalReview article

92 Scopus citations

Abstract

This work explored the potential of ultraviolet light/hydrogen peroxide (UV/H2O2) photochemical oxidation technology for treating textile dyeing effluent. The effects of dye class and structure, dyebath concentration, radiation intensity, and hydrogen peroxide level on a UV/H2O2 system's ability to decompose and decolorize dyes were studied. To anticipate the economical viability of the technology, calculations projecting the scaled-up operating costs were also performed. Results indicated that acid, direct, basic, and reactive dyes appeared to be viable candidates for further in-plant treatment trials using photochemical oxidation treatment technology. Dye structures specifically involved in this research included disazo, azo, stilbene, polyazo, oxazine, triarylmethane, disazovinyl sulfone, triazine, anthraquinone, and indigoid. The disperse and vat dyes did not appear to be viable for future in-plant trials. Limited dye solubility seemed to have hindered the UV/H2O2 degradation of these two dye classes.

Original languageEnglish (US)
Pages (from-to)27-35
Number of pages9
JournalTextile Chemist and Colorist
Volume30
Issue number4
StatePublished - Apr 1 1998

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Keywords

  • Dyes
  • Effluent
  • Hydrogen Peroxide
  • Photodegradation
  • Wastewater Treatment

ASJC Scopus subject areas

  • Chemical Engineering(all)

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