APPLICATION OF PYRITE ASH IN THE MICROWAVE FENTON PROCESS OF DECOLORIZATION OF SYNTHETIC COLOR SOLUTION

作者：Becelic Tomin Milena R^*; Dalmacija Bozo D; Tomasevic Dragana D; Molnar Jelena J; Rajic Ljiljana M

来源：Hemijska Industrija, 2013, 67(3): 399-409.

DOI：10.2298/HEMIND120428088B

• Microwave
• Hydrogen-peroxide
• Rhodamine B
• Decolorization
• Fenton catalyst
• Pyrite ash

The aim of this study is to investigate the possibility of fly ash and pyrite ash applications as Fenton catalysts in the advancement of the microwave/hydrogen peroxide (MW/H2O2) treatment in the Rhodamine B decolorization process. At the same time, a comparison of the influence of these heterogeneous catalysts with the homogeneous Fenton catalyst oh the decolorization process was conducted. The influence of the catalyst was tracked in previously optimized conditions MW/H2O2:[Rhodamine B] = 0.2 mM; pH 3.2; temperature 85 degrees C; [H2O2] = 80 mM; power = 300 W. Under such conditions, an efficiency of 99.5% was achieved after 30 min of reaction time. The same efficiency was achieved through the application of MW/Fe2+/H2O2 and MW/pyrite ash/H2O2 after only 10 min of reaction time. The order of the tested integrated processes according to the initial reaction rate is as follows: MW/Fe2+/H2O2>MW/fly ash/H2O2>MW/H2O2. The results of this study present a basis for further research and optimization of water solution decolorization process through pyrite ash with MW and hydrogen peroxide application.

• 出版日期2013-6