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Decolourisation of Reactive Dyes by Modified Photo-Fenton Process Under Irradiation with Sunlight
In a laboratory study, decolourisation of four reactive dyes (Cibacron Yellow C5G, Remazol Blue RGP, Remazol Red RGP and Remazol Golden Yellow RGP) by modified photo-Fenton (UV-vis/ferrioxalate/H2O2) process under irradiation with sunlight was examined. Over 90% decolourisation occurred in 90-120 min for dye concentrations of 20, 50 and 100 mg/L, indicating the effectiveness of ferrioxalate complexes in decolourisation of even strongly coloured solutions. The study has demonstrated that modified photo-Fenton process is an effective process for decolourisation of reactive dyes. The process is useful for treatment of dyehouse waste in tropical and equatorial regions where sunlight is abundant.
Keywords
Reactive Dyes, Decolourisation of Dyes, Photocatalytic Degradation, Modified Photo-Fenton Process.
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