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Factors affecting colour removal from reactive dye bath by ozonation
1Istanbul Technical University, Environmental Engineering Department, ITU Inşaat Fakültesi, Ayazağa Kampüsü, 80626, Maslak, Istanbul, Turkey.
Summary
Ozone treatment effectively removed color from reactive dye baths in 30 minutes. Chelating agents significantly impacted ozonation efficiency, explaining differences between real dye baths and synthetic solutions.
Area of Science:
- Environmental Chemistry
- Water Treatment Technologies
Background:
- Reactive dyes are widely used in textile industries, leading to colored wastewater.
- Effective treatment of dye wastewater is crucial for environmental protection.
Purpose of the Study:
- To investigate the effectiveness of ozonation for color removal from reactive dye bath mixtures.
- To identify factors influencing the ozonation process in real dye bath samples compared to synthetic solutions.
Main Methods:
- Ozonation of a mixed reactive dye bath sample.
- Comparison of ozonation results between dye bath and synthetic dye solutions.
- Assessment of the effects of NaCl, Na2CO3, and chelating agents on ozonation.
Main Results:
- Color removal was achieved within 30 minutes using 605 mg/L of ozone.
- Significant differences were observed between dye bath and synthetic dye solution ozonation.
- Chelating agents significantly affected both the time and ozone dose required for effective treatment.
Conclusions:
- Ozonation is a viable method for rapid color removal from reactive dye wastewater.
- The presence of chelating agents in real dye baths substantially influences ozonation efficiency.
- Understanding these factors is key to optimizing wastewater treatment processes.