The sonochemical decolourisation of textile azo dye Orange II: Effects of Fenton type reagents and UV light

M. Dükkancı, Mircea Vinatoru, Timothy J. Mason

    Research output: Contribution to journalArticle

    51 Citations (Scopus)

    Abstract

    The removal of Orange II (O-II) from aqueous solution under irradiation at 850 kHz has been studied. The effects of both homogeneous (with FeSO4/H2O2), and heterogeneous (Fe containing ZSM-5 zeolite/H2O2) Fenton type reagents are reported together with the effect of UV irradiation in combination with ultrasound both alone and with homogeneous Fenton-type reagent. Degrees of decolourisation of 6.5% and 28.9% were observed using UV radiation and ultrasound, respectively, whereas under the simultaneous irradiation of ultrasound and UV light, the decolourisation degree reached 47.8%, indicating a synergetic effect of ultrasound and UV light. The decolourisation was increased with the addition of Fenton’s reagent with an optimal Fenton molar reagent ratio, Fe2+:H2O2 of 1:50. In the combined process of ultrasound and UV light with the homogeneous Fenton system 80.8% decolourisation could be achieved after 2 h indicating that UV improves this type of Orange II degradation. The degree of decolourisation obtained using the heterogeneous sono-Fenton system (Fe containing ZSM-5 zeolite catalysts + H2O2 + ultrasound) were consistently lower than the traditional homogeneous ultrasound Fenton system. This can be attributed to the greater difficulty of the reaction between Fe ions and hydrogen peroxide. In all cases the Orange II ultrasonic decolourisation was found to follow first order kinetics.
    Original languageEnglish
    Pages (from-to)846–853
    JournalUltrasonics Sonochemistry
    Volume21
    Issue number2
    Early online date7 Sep 2013
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Azo Compounds
    Azo dyes
    Textiles
    textiles
    Ultraviolet Rays
    Ultraviolet radiation
    reagents
    dye
    dyes
    Ultrasonics
    irradiation
    zeolite
    Irradiation
    peroxides
    hydrogen peroxide
    Hydrogen Peroxide
    ultrasonics
    Ions
    degradation
    aqueous solutions

    Bibliographical note

    The full text of this item is not available from the repository.

    Keywords

    • Sonication
    • Sonophoto-Fenton system
    • Heterogeneous sono-Fenton system
    • Orange II

    Cite this

    The sonochemical decolourisation of textile azo dye Orange II: Effects of Fenton type reagents and UV light. / Dükkancı, M.; Vinatoru, Mircea; Mason, Timothy J.

    In: Ultrasonics Sonochemistry, Vol. 21, No. 2, 2014, p. 846–853.

    Research output: Contribution to journalArticle

    Dükkancı, M. ; Vinatoru, Mircea ; Mason, Timothy J. / The sonochemical decolourisation of textile azo dye Orange II: Effects of Fenton type reagents and UV light. In: Ultrasonics Sonochemistry. 2014 ; Vol. 21, No. 2. pp. 846–853.
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