Catalytic ozonation of sulfamethoxazole using low-cost natural silicate ore supported Fe<sub>2</sub>O<sub>3</sub>: influencing factors, reaction mechanisms and degradation pathways
Lisha Luo, Zhiyu Sun, Yuxi Chen, Hui Zhang, Yinkun Sun, Dongwei Lu, Jun Ma
Abstract
) was 88.1% after 30 min, compared with only 35.1% SMX degradation rate in the absence of the catalyst, and the total organic carbon (TOC) removal reached 49.1% after 60 min. Reaction mechanisms revealed that surface hydroxyl groups of FeSO were a critical factor for hydroxyl radical (˙OH) production leading to fast SMX degradation in the ozone decomposition process. The degradation products were detected, and the possible pathways of SMX were then proposed. This study provides guidance for preparing a low-cost catalyst and analyzing the degradation products and pathways of SMX in the ozonation process, which is of significance in practical industrial applications.
Topics & Concepts
CatalysisChemistryDegradation (telecommunications)SilicateDecompositionNuclear chemistryFourier transform infrared spectroscopyX-ray photoelectron spectroscopyOzoneHydroxyl radicalOxideInorganic chemistryChemical engineeringRadicalOrganic chemistryEngineeringTelecommunicationsComputer scienceCatalytic Processes in Materials ScienceAdvanced oxidation water treatmentAdvanced Photocatalysis Techniques