COOMASSIE BRILLIANT BLUE DYE REMOVAL IN AQUEOUS SOLUTION BY HYDROGEN PEROXIDE IN THE PRESENCE OF IRON OXIDE NANOPARTICLES

In this work, was investigated of catalytic oxidative degradation of the Coomassie Brilliant Blue synthetic dye (CBB R-250) by hydrogen peroxide H2O2 2 O 2 in the presence of Fe3O4 3 O 4 magnetite nanoparticles. It was found that in the presence of Fe3O4 3 O 4 magnetic nanoparticles, the dye degradation rate significantly increases, which is explained by the strong interaction of Fe3O4 3 O 4 nanoparticles with hydrogen peroxide with the formation of highly reactive hydroxyl radicals followed by an increase in the rate of oxidative degradation. Also in the article, it was found that the degradation of the & Scy;BB R-250 dye is highly dependent on conditions of process, such as pH of the medium and degradation time. The relatively low rate of oxidative degradation & Scy;BB R-250 dye at high pH is explained by the formation of Fe3+ 3+ complexes, which leads to a decrease in the concentration of Fe2+ 2+ ions, which are responsible for the formation of free radicals.