Author(s):
1. Nebojša Vasiljević, Univerzitet u Istočnom Sarajevu, Tehnološki fakultet Zvornik, Republic of Srpska, Bosnia and Herzegovina
2. Mitar Perušić, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
3. Srećko Stopić, RWTH Aachen University, Germany
4. Radislav Filipovic, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
5. Duško Kostić, Faculty of Technology - University of East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
6. Jelena Mićić, Republic of Srpska, Bosnia and Herzegovina
7. Slavko Smiljanić, Republic of Srpska, Bosnia and Herzegovina

Abstract:
Fenton processes, in which hydrogen peroxide in the presence of divalent iron ion generates hydroxyl radicals (•OH), are widely used for the degradation of organic pollutants (phenols, antibiotics, dyes). In this review, red mud is analyzed as a cheap source of iron ions in Fenton processes. Raw red mud can be used without additional modifications, but to increase the catalytic efficiency, its modification is required, which includes chemical reduction, carbothermal treatment or doping with metals. Of particular importance are the photo-Fenton and electro-Fenton processes, in which red mud doped with Co, Sn or Ce, or in combination with reduced graphene oxide and biochar, allow the generation of not only hydroxyl radicals (•OH) but also singlet oxygen (1O2) and superoxide radicals (•O2-), achieving ≥99% pollutant removal. At the same time, the synthesized catalysts showed high stability and reusability. Based on a comparative analysis of more than 30 studies, it is concluded that red mud represents a cheap source of iron ions for heterogeneous Fenton processes, with significant potential for industrial application.

Key words:
Fenton process, hydroxyl radicals, organica pollutants, red mud

Thematic field:
SYMPOSIUM C - Water

Date of abstract submission:
29.07.2025.

Conference:
Contemporary Materials 2025 - Savremeni Materijali

Applied paper from author