Reaction kinetics of spent reactive dye bath ozonation process

T. Ölmez*, I. Kabdaşli, O. Tünay

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Oxidation of a spent reactive dye bath containing a mixture of Remazol brand dyes as well as two main inorganic additives was carried out using ozone and decolorization was obtained in a relatively short time (10-30 min) and ozone utilizations were between 329 and 1609 mg. The spent dye bath oxidation could not be represented by any simple kinetics. Ozonation kinetics and decolorization character was evaluated using synthetic samples with dyes and assisting chemicals. Synthetic Dye Sample decolorization was achieved in 90 s with ozone utilization of 32 mg. NaCl addition decelerated the decolorization rate and increase the ozone utilizations. Na2CO3 addition resulted in high pH and alkalinity and changed the mechanismof ozonation process as well as decolorization reactions yielding a better oxidation than that of the sample containing only NaCl.

Original languageEnglish
Title of host publicationSurvival and Sustainability
Subtitle of host publicationEnvironmental Concerns in the 21st Century
Pages1263-1273
Number of pages11
DOIs
Publication statusPublished - 2011
EventInternational Conference on Environment: Survival and Sustainability - Nicosia, Cyprus
Duration: 19 Feb 200724 Feb 2007

Conference

ConferenceInternational Conference on Environment: Survival and Sustainability
Country/TerritoryCyprus
CityNicosia
Period19/02/0724/02/07

Keywords

  • Color removal
  • Dye bath additives
  • Ozonation
  • Reactive dye bath
  • Textile finishing industry

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