Application of natural hematite as catalyst in heterogeneous photo-Fenton like process for 2,4-dichlorophenol degradation
Author Identifier
Mehdi Khiadani: https://orcid.org/0000-0003-1703-9342
Document Type
Journal Article
Publication Title
Journal of Photochemistry and Photobiology A: Chemistry
Volume
459
Publisher
Elsevier
School
School of Engineering
RAS ID
77098
Funders
Isfahan University of Medical Sciences (1401269)
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.
DOI
10.1016/j.jphotochem.2024.116057
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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