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Ashraf, S., Rauf, A. and Alhadrami, S. (2006) Degradation of Methyl RedFenton’s Reagent and the Effect of Various Salts. Dyes Pigments, 69, 80.

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• TITLE: Humid Air Plasma Treatment of Birnessite Surface: Application to the Removal of Cochineal Red

  AUTHORS: Wafa Chouchene, Nizar Bellakhal

  KEYWORDS: Humid Air Plasma, Surface Treatment, Thin Layers of Birnessite, Cochineal Red, Degradation

  JOURNAL NAME: Materials Sciences and Applications, Vol.6 No.11, November 20, 2015

  ABSTRACT: The thin layers of birnessite (Mn7O13?5H2O) are exposed to reactive species gliding arc plasma in humid air, which induces the treatment of the thin layers surface. Plasma treatment thin layer of birnessite was used for the degradation of Cochineal Red. The experimental results showed that 95% of the CR solution was completely decolorized by thin layer of birnessite treated by plasma compared to 80% of the same solution after interaction of thin layer of birnessite untreated. The decay kinetics always follows a pseudo-first order reaction. The application of the humid air plasma for the surface treatment of thin layers of birnessite improves the efficiency of treatment for Cochineal Red degradation.