Effect of Concentration of FeCl2/FeCl3 Solution in Production Step of Heterogen Fenton Catalyst with selulosa bakterial Substrate and H2O2 Concentration to the Catalytic Activity of Fenton Reaction in Metilena biru Degradation

• Main Author: Ricardo Salomo Abraham, Antonio
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/38486
• Institution: Institut Teknologi Bandung

Fenton reaction is a decomposition reaction of organic matter by hydroxyl radicals in the presence of Fenton reagents of H2O2 solution and iron either in dissolved phase or in solid phase as catalyst which is often used to degrade non-biodegradable organic pollutants in waste water treatment. Experiments related to catalytic activity were carried out to investigate optimal H2O2 concentration and correlation between precursor concentration parameters in catalyst synthesis, heterogeneous Fenton catalyst type and particle size formed with selulosa bakterial as a substrate, and its effectiveness in increasing Fenton reaction rates simulated by the degradation of methylene blue solution as organic pollutants. From the XRD, SEM, and EDS characteriztions on catalyst specimens, iron oxide of magnetite phase was 12.7% (percent by mass) and iron oxihydroxide of goethite phase of 15.0% was identified. The average particle size of 0.01 M specimens was 0.39 ± 0.36 ?m, 0.05 M specimens were 1.88 ± 0.60 ?m, and 0.10 M specimens were 2.90 ± 1.49 ?m. UV-Vis spectroscopy was carried out to determine the Fenton reaction rate by changing the parameters of H2O2 concentration and by using different catalyst specimens, which were synthesized from the precursors of FeCl2 / FeCl3 with different concentration parameters. Optimal H2O2 concentration of 1.2% with k constant of 2.65 x 10-2 min-1 was found. Results indicates there is a tendency for catalyst specimens made with smaller concentrations of FeCl2 / FeCl3 precursors to have smaller catalyst particles size which consequently increases their catalytic activities seen in the increased rate of reaction.