Abstract
The kinetics of the oxidative degradation of an azo dye Metanil Yellow (MY) was investigated in aqueous solution using dirhodium(II) caprolactamate, Rh(2)(cap)(4), as a catalyst in the presence of H(2)O(2) as oxidizing agent. The reaction process was followed by UV/Vis spectrophotometer. The decolorization and degradation kinetics were investigated and both followed a pseudo-first-order kinetic with respect to the [MY]. The effects of various parameters such as H(2)O(2) and dye concentrations, the amount of catalyst and temperature have been studied. The studies show that Rh(2)(cap)(4) is a very effective catalyst for the formation of hydroxyl radicals HO(•) which oxidized and degraded about 92% of MY into CO(2) and H(2)O after 24 h as measured by total carbon analyzer.
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