Dissolved Ozone based formulations are regarded as good chemical decontamination reagents for the chromium oxide covered alloy surfaces. The present article highlights the optimization of process parameters for the dissolved ozone based process. The parameters like solution pH and temperature, input ozone and iron content in oxide on the dissolution behavior of the chromium oxide were studied. Presence of carbonate/bicarbonate in the dissolved ozone increases the dissolution of chromium oxide. Addition of 5 and 10 mM carbonate showed increase in the percentage dissolution by 1.6 and 2.9 times at fixed input of ozone compared to the absence of carbonate. Presence of iron in the chromium oxide lattice lowers the oxide dissolution in dissolved ozone medium. Lowering the pH helps in release of iron from the oxide lattice enabling a higher percentage of oxide dissolution.
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