High-energy irradiation treatment of aqueous solutions of azo dyes: Steady-state gamma radiolysis experiments

Dilek Şolpan, Olgun Güven, Erzsébet Takács, László Wojnárovits, Katalin Dajka

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The radiation degradation and decoloration of three textile dyes Janus Green B (JGB), Reactive Black 5 (RB5) and Apollofix Red (AR) have been studied as a function of gamma irradiation dose (0.1-8kGy) and dose rate (0.5-4kGy/h). The starting G values for decolorations were found 0.3-1molecule/100eV and the yields decreased with decoloration. The dose necessary for complete decoloration detected in 50ppm aqueous solution was ∼0.5kGy for RB5, 2kGy for AR and 8kGy for JGB in air. The effect of N2, N2O on the degradation and decoloration process was also studied.

Original languageEnglish
Pages (from-to)531-534
Number of pages4
JournalRadiation Physics and Chemistry
Volume67
Issue number3-4
DOIs
Publication statusPublished - Jun 1 2003

Keywords

  • Azo dyes
  • Decoloration
  • Radiation treatment
  • Wastewater

ASJC Scopus subject areas

  • Radiation

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