Investigation of the synergism of hybrid advanced oxidation processes with an oxidation agent to degrade three dyes

Abstract

This paper attempts to explore the synergism of hybrid advanced oxidation processes, which are sono-photo-catalysis and sono-photo-activated two oxidation agents, viz. hydrogen peroxide and potassium persulfate individually using cobalt doped ferric oxide (Co-Fe2O3) as a photocatalyst, which can be excited and promote an electron to initiate the reactions. Degradation of three dye types, viz. eosin B, rhodamine B, and methylene blue have been used as a reaction model. The results revealed the binary techniques, sono-photo-catalysis to degrade eosin B and methylene blue have an antagonistic effect with negative synergy. On the contrary, rhodamine B has a positive synergy value, hence, indicating a synergistic effect. The ternary technique, which was coupling sono-photo-catalysis with the optimum amount of K2S2O8 raised the mineralization and showed a significant positive synergism effect for K2S2O8 (39.89%).