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- Title
The sonochemical decolorisation of textile azo dye CI Reactive Orange 127.
- Authors
Özdemir, Celalettin; Öden, Muhammed K; Şahinkaya, Serkan; Güçlü, Dünyamin
- Abstract
In the present study, Fenton and sono‐Fenton processes were applied to the oxidative decolorisation of synthetic textile wastewater including CI Reactive Orange 127 and polyvinyl alcohol. Process optimisation [pH, ferrous ion (Fe2+) and hydrogen peroxide (H2O2)], kinetic studies and their comparison were carried out for both of the processes. The sono‐Fenton process was performed by indirect sonication in an ultrasonic water bath, which was operated at a fixed 35‐kHz frequency and 80 W power. The optimum conditions were determined as [Fe2+] = 20 mg l−1, [H2O2] = 15 mg l−1 and pH = 3 for the Fenton process and [Fe2+] = 25 mg l−1, [H2O2] = 5 mg l−1 and pH = 3 for the sono‐Fenton process. The colour removals were 89.9% and 91.8% by the Fenton and sono‐Fenton processes, respectively. The highest decolorisation was achieved by the sono‐Fenton process because of the production of some oxidising agents as a result of sonication. Consequently, ultrasonic irradiation in the sono‐Fenton process slightly increased the colour removal to 91.8%, while decreasing the hydrogen peroxide dosage to one‐third of that of the Fenton process.
- Subjects
SYNTHETIC fibers; INDUSTRIAL wastes; REACTIVE dyes; POLYVINYL alcohol; MERCK &; Co. Inc.; OXIDATION
- Publication
Coloration Technology, 2011, Vol 127, Issue 4, p268
- ISSN
1472-3581
- Publication type
Article
- DOI
10.1111/j.1478-4408.2011.00310.x