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 language | English |
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Title of host publication | Survival and Sustainability |
Subtitle of host publication | Environmental Concerns in the 21st Century |
Pages | 1263-1273 |
Number of pages | 11 |
DOIs | |
Publication status | Published - 2011 |
Event | International Conference on Environment: Survival and Sustainability - Nicosia, Cyprus Duration: 19 Feb 2007 → 24 Feb 2007 |
Conference
Conference | International Conference on Environment: Survival and Sustainability |
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Country/Territory | Cyprus |
City | Nicosia |
Period | 19/02/07 → 24/02/07 |
Keywords
- Color removal
- Dye bath additives
- Ozonation
- Reactive dye bath
- Textile finishing industry