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Studies on Photocatalytic Degradation of Azo Dye Acid Red-18 (PONCEAU 4R) using Methylene Blue Immobilized Resin Dowex-11

Author Affiliations

  • 1 Photochemistry lab, Department of chemistry, Jai Narain Vyas University, Jodhpur, Rajasthan-342001, INDIA

Int. Res. J. Environment Sci., Volume 2, Issue (12), Pages 35-41, December,22 (2013)


Dowex-11 an anion exchanger resin immobilized in Methylene Blue is an efficient catalyst for the activation of O at room temperature degrades dye in presence of visible light irradiation. The effect of various experimental parameters such as dye loading, catalyst loading, pH and light intensity were investigated during the process. This photo catalyst degrades 99% of the dye Acid red -18 into non toxic and biodegradable simpler molecules by degrading azo bonds in 160 minutes at pH 7.5, temperature 303K and the system follow first order kinetics, the value of rate constant k is 2.3310-2min-1


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