Decolorization of textile azo dye reactive orange 16 with UV/H2O2 process

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Radović Miljana Mitrović Jelena Anđelković Tatjana Purenović Milovan Bojić Danijela Bojić Aleksandar
Abstract	The photochemical decolorization of C.I. Reactive Orange 16 (RO16), a reactive textile azo dye by the UV/H2O2 process using a batch photoreactor with UV lamps emitting at 253.7 nm, was studied. Complete decolorization of 50.0 mg dm-3 initial dye concentration was achieved in less than 6 min under optimal conditions (25 mM initial peroxide concentration, at pH 7.0 and with UV light intensity 1950 μW cm-2). The effect of experimental variables, such as initial pH, initial concentration of H2O2, initial dye concentration, and the intensity of UV light was studied. The highest decolorization rates were performed at peroxide concentration in range from 20 mM up to 40 mM, above which decolorization was inhibited by a scavenging effect of peroxide. The decolorization was more efficient in neutral pHs. The efficiency of the process was improved in lower initial dye concentration and at higher intensity of UV light.
Related Links	http://www.doiserbia.nb.rs/img/doi/0352-5139/2012/0352-51391100187M.pdf
ISSN	03525139
e-ISSN	18207421
DOI	10.2298/JSC110216187M
Journal	Journal of the Serbian Chemical Society
Issue Number	4
Volume Number	77
Language	English
Publisher	Serbian Chemical Society
Publisher Date	2012-01-01
Publisher Place	Serbia
Access Restriction	Open
Subject Keyword	Chemistry Reactive Orange 16 Uv/h2o2 Process Decolorization
Content Type	Text
Resource Type	Article
Subject	Chemistry