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Optimization of Acid Orange II Degradation using Fe3-xMnxO4-MKSF Catalyst in Heterogeneous Fenton-like Reaction via Response Surface Methodology


Amirah Annasuha Azmi Chemical Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, 13500 Pulau Pinang, Malaysia Rasyidah Alrozi Chemical Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, 13500 Pulau Pinang, Malaysia Hybrid Nanomaterials, Interfaces & Simulation (HYMFAST), Chemical Engineering Studies, College of Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500, Permatang Pauh, Pulau Pinang, Malaysia Nor Aida Zubir Chemical Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, 13500 Pulau Pinang, Malaysia Hybrid Nanomaterials, Interfaces & Simulation (HYMFAST), Chemical Engineering Studies, College of Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500, Permatang Pauh, Pulau Pinang, Malaysia Mohamad Anuar Kamaruddin Environmental Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Pulau Pinang, Malaysia
Abstract
In this study, the operational conditions for acid orange II (AOII) degradation in a heterogeneous Fenton-like reaction using a claysupported Fe3-xMnxO4 (Fe3-xMnxO4-MKSF) catalyst were optimized using response surface methodology (RSM). A standard RSM called a central composite design (CCD) experiment was used to determine the effects of four operational variables: pH solution, catalyst dosage, concentration of H2O2 and initial concentration of AOII on the percentage of AOII removal. Based on the analysis of variance (ANOVA), the model exhibited a correlation coefficient (R2 ) of 0.9672 which demonstrated approximately 96% of target function variation. The optimal operational conditions were obtained at 2.5 pH solution, 0.4 g/L catalyst dosage, 15 mM H2O2 concentration and 35 mg/L AOII initial concentration which resulted in 86.72% of AOII degradation. The experimental results showed good agreement with the values predicted by the model at optimal conditions, exhibiting relative differences of less than 5%. These findings provide valuable insights into the interaction of four key variables affecting AOII degradation during the heterogeneous Fenton-like reaction using Fe3-xMnxO4-MKSF catalyst.
Keyword: Optimization, Acid orange II dye, Fenton-like reaction, Fe3-xMnxO4-MKSF, Heterogeneous catalyst, Response surface methodology
DOI: 10.24191/esteem.v21iMarch.4755.g 3039
References:
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