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Experimental Studies on Decolorisation of Malachite Dye using Continuous Photocatalytic Reactor

Author Affiliations

  • 1Department of Chemical Engineering, Adhiparasakthi Engineering College, Melmaruvathur, INDIA
  • 2 Department of Chemical Engineering, Kongu Engineering College, Perundurai, INDIA
  • 3 Department of Chemical and Food Science, Kongu Engineering College, Perundurai, INDIA

Int. Res. J. Environment Sci., Volume 3, Issue (3), Pages 14-21, March,22 (2014)


Textile industry consumes large quantity of water during dyeing and finishing process which discharges the toxic and hazardous chemical to the environment. Therefore, suitable treatment process has to be carried out for the degradation of organic dye. By choosing the desired catalyst and suitable light source, degradation can be potentially effective and develops an eco friendly environment. In this paper, Heterogeneous Photo-catalysis under Visible light is employed as an effective method for the degradation and decolorisation. Sol–gel technique has been taken as one of the adaptable method for the preparation of metal doped nano crystalline TiO. The parameters considered for this study are pH, initial concentration of dye, flow rate of dye and light intensity. Malachite green is used for experimental study. Photo decolorisation is increased with a decrease in flow rate of reactant and by increasing the light intensity. The color removal of MG is very effective by maintaining pH at 9 respectively. It has been found that as the initial concentration of dye increases, the rate of color removal decreases.


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