Heterogeneous fenton-like reaction using Fe3-xMnxO4-MKSF composite catalyst for degradation of acid orange II dye

• Main Authors: Abdul Rahman, N.N.A (Author), Alrozi, R. (Author), Amir, N. (Author), Kamaruddin, M.A (Author), Zubir, N.A (Author)
• Format: Article
• Language: English
• Published: Institute of Physics Publishing 2019
• Subjects: Acid Orange II; Catalyst activity; Catalyst supports; Catalytic performance; Citrus fruits; Composite catalysts; Degradation; Degradation kinetics; First order reactions; Heterogeneous fenton; Iron oxides; Its efficiencies; Kinetics; Magnetite; Manganese compounds; Montmorillonite KSF; Nanostructured materials; Oxidation; Reaction kinetics
• Online Access: View Fulltext in Publisher; View in Scopus

 The selection of a good catalyst support is crucial in contributing towards the enhancement catalytic activity of a catalyst. Therefore, in this study, the influence of montmorillonite KSF (MKSF) clay loading in relation with catalytic performance of the resultant composite catalyst has been investigated. The MKSF clay loading were varied at x = 20, 40, 60 and 80 wt%, respectively. Interestingly, Fe3-0.3Mn0.3O4-MKSF(40wt%) has shown greater catalytic performance up to 98% of acid orange II (AOII) dye removal in comparison to the Fe3-0.3Mn0.3O4 and Fe3O4 catalysts. The AOII degradation kinetic using Fe3-0.3Mn0.3O4-MKSF(40wt%) was fitted well with first-order reaction kinetic and the reaction rate increased in the order of Fe3O4>Fe3-0.3Mn0.3O4>Fe3-0.3Mn0.3O4-MKSF(40wt%). It also demonstrated in the work that Fe3-0.3Mn0.3O4-MKSF(40wt%) catalyst can be reused several times without affecting its efficiency. Thus, it can be suggested that MKSF clay as catalyst support played a significant role in enhancing the overall catalytic performance of Fe3-0.3Mn0.3O4 catalyst during the heterogeneous Fenton-line reaction as well as the degradation kinetics of the AOII solutions. © Published under licence by IOP Publishing Ltd.