Comparison of different ultrasound support methods during colour and chemical oxygen demand removal of disperse and reactive dyebath solutions by ozonation
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Date
2012-12
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Wiley
Abstract
In this study, the effects of ozonation, ozonation with ultrasonic bath and ozonation with ultrasonic homogeniser processes on colour and chemical oxygen demand removal properties of disperse (CI Disperse Red 60, CI Disperse Blue 337) and reactive (CI Reactive Blue 171 and CI Reactive Blue 19) dyebath solutions with and without dyeing auxiliaries were investigated. Chemical oxygen demand (in mg/l) and colour (in Hazen) measurements of the studied dyebath solutions were determined. The ozonation process caused simultaneous chemical oxygen demand removal during decolorisation. However, the improvement in chemical oxygen demand reduction was less than of that on decolorisation. The application of the combination of ozonation with ultrasonic homogeniser is the most efficient process and creates a great time advantage over the other process types studied (ozonation alone and ozonation with ultrasonic bath) to reach the same colour and levels of chemical oxygen demand removal.
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Keywords
Chemistry, Engineering, Materials science, Aqueous-solution, Azo-dye, Degradation mechanism, Operating parameters, Catalytic ozonation, Ci reactive-blue-19, Combined sonolysis, Semibatch reactor, Textile effluents, Waste-water, Chemical oxygen demand, Color, Ozone, Chemical oxygen demand removals, Decolorisation, Dye bath, Dyeing auxiliary, Efficient process, Ozonation process, Support method, Ultrasonic bath, Ozonization
Citation
Eren, H. A. vd. (2012). "Comparison of different ultrasound support methods during colour and chemical oxygen demand removal of disperse and reactive dyebath solutions by ozonation". Coloration Technology, 128(6), 446-453.