The influence of hydrogen peroxide concentration on catalytic activity of fenton catalyst@bacterial cellulose

• Published in: IOP conference series. Materials Science and Engineering Vol. 509; no. 1; pp. 12020 - 12024
• Main Authors: Wibowo, Arie, Sihombing, Antonio R S A, Putra Parmita, Ade Wahyu Yusariarta, Triadhi, Untung, Ardy, Husaini
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 03.05.2019
• Subjects: advanced oxidation processes; Aerogels; bacterial celluloses; Catalysts; Catalytic activity; Degradation; heterogeneous fenton catalyst; Hydrogen peroxide; Iron oxides; Methylene blue; Reaction kinetics; recalcitrant organic pollutant; Sol-gel processes; Spectrum analysis; waste water treatment
• ISSN: 1757-8981; 1757-899X; 1757-899X
• DOI: 10.1088/1757-899X/509/1/012020

Utilization of commercial Bacterial Celluloses (BCs) as catalyst support for preparation of heterogeneous fenton catalysts is attractive because catalytic activity of fenton catalyst can be increased by reducing their particles size. In this report, fenton catalyst@BC were prepared by sol gel method with fixed precursor concentration (0.5 M) and varied concentration of H2O2 (0.3, 0.6, 1.2 and 1.7 %v/v) to obtain optimum condition for fast degradation of Methylene Blue (MB). Scanning Electron Microscope (SEM) showed that micron-sized particles with particle sizes 1002.7 ± 511.5 nm has been successfully deposited on the surface of BC aerogel. Energy Dispersive Spectroscopy (EDS) results revealed that a small portion of iron oxide is observed in sample, even though the dominant elements in sample are sodium and chloride. UV-Vis spectroscopy unveiled that catalytic degradation profile of MB follows pseudofirst order reaction kinetics and the fastest degradation of MB was observed at 1.2 %v/v of H2O2 with Constanta of degradation rate (k) value is 2.65 × 10−2 min−1. Finding optimum condition for fastest degradation of MB is essential for the effort to completely remove dyes from clean water.