Degradation of reactive dyes by supercritical water oxidation in a batch reactor

The supercritical water oxidation of three reactive dyes in a batch reactor was studied with varying levels of hydrogen peroxide oxidant. The decolorisation of each dye was measured by absorbance spectrophotometry and quantitatively determined from calibration graphs for each of the three dyes. At the lowest excess oxidant concentration (zero excess), the extent of chromogen destruction was nominally lower for the red dye than for the blue and black dyes.