Application of natural hematite as catalyst in heterogeneous photo-Fenton like process for 2,4-dichlorophenol degradation
Author Identifier (ORCID)
Mehdi Khiadani: https://orcid.org/0000-0003-1703-9342
Abstract
This work investigates the degradation of 2,4-dichlorophenol (2,4-DCP) through the combination of hematite and UV light for the activation of sodium percarbonate (SPC) in a heterogeneous photo-Fenton like (HPF) process. The hematite was fully characterised and the effects of different reaction parameters such as pH, doses of hematite and SPC, 2,4-DCP initial concentration, and the presence of co-existing anions were investigated. Under the optimised conditions (pH = 3.0, [Hematite]0 = 300.0 mg L−1, [SPC]0 = 500.0 mg L−1), the degradation of 2,4-DCP (50.0 mg L−1) was 99.88 ± 0.05 %. Quenching experiments demonstrated the participation of 1O2, O2[rad]−, CO3[rad]−, and [rad]OH radicals in the degradation of 2,4-DCP, with the dominance of [rad]OH radicals (82.39 %). Furthermore, the degradation of 2,4-DCP was effectively retarded by the presence of Cl−, NO3−, CO32−, and PO43− anions in the solution. Overall, the HPF process with hematite can be proposed as an effective and promising approach for the degradation of 2,4-DCP from the waste stream and can be used for the decontamination of other organic compounds due to its stability and feasibility.
Keywords
Advanced oxidation process, Fenton process, Hematite, Phenolic compounds, Sodium percarbonate
Document Type
Journal Article
Date of Publication
2-1-2025
Volume
459
Publication Title
Journal of Photochemistry and Photobiology A: Chemistry
Publisher
Elsevier
School
School of Engineering
RAS ID
77098
Funders
Isfahan University of Medical Sciences (1401269)
Copyright
subscription content
Comments
Taheri, E., Fatehizadeh, A., Khiadani, M., Ghasemian, M., & Bedia, J. (2025). Application of natural hematite as catalyst in heterogeneous photo-Fenton like process for 2, 4-dichlorophenol degradation. Journal of Photochemistry and Photobiology A: Chemistry, 459. https://doi.org/10.1016/j.jphotochem.2024.116057