Cardona Rodríguez, YanethWegrzyn, AgnieszkaMiskowiec, PawelKorili, Sophia A.Gil Bravo, Antonio2023-02-152023-02-152023-04-01Cardona, Y., Wegrzyn, A., Miskowiec, P., Korili, S. A., Gil, A. (2023) Heterogeneous Fenton- and photo-Fenton-like catalytic degradation of emerging pollutants using Fe2O3/TiO2/pillared clays synthesized from aluminum industrial wastes. Journal of Water Process Engineering, 52(103494), 1-20. https://doi.org/10.1016/j.jwpe.2023.103494.2214-714410.1016/j.jwpe.2023.103494https://academica-e.unavarra.es/handle/2454/44730The presence of emerging pollutants (EPs) in water is a major environmental concern. This study evaluates for the first time the removal of three EPs, namely triclosan (TCS), 2,6-dichlorophenol (2,6-DCP), and bisphenol A (BPA), 90 μmol/dm3, from water through both Fenton- and photo-Fenton-like reactions using montmorillonite (Mt) and aluminum interlayered pillared clays (Al-PILC) as catalytic supports. The catalysts (Fe2O3/TiO2/Mt and Fe2O3/TiO2/Al-PILC) were evaluated in single-component solutions and in an equimolar mixture. Two Al-PILC were synthesized from a hazardous waste, namely aluminum saline slag, using either the acid (Al-PILCAE) or the alkaline (Al-PILCBE) aluminum extract as precursors. The third Al-PILC was obtained by the conventional method using a commercial aluminum salt (Al-PILCCM). Catalytic supports were impregnated at 10 and 20 wt% titanium. Iron loadings from 1 to 20 wt% were tested for Mt, while only 20 wt% iron was tested for Al-PILC. All catalysts were characterized using several techniques and the results confirmed the formation of TiO2 and Fe2O3. Almost 100 % of TCS and 2,6-DCP were removed by both Fenton-like (240 and 420 min, respectively) and photo-Fenton-like reactions (30 and 90–120 min, respectively) using the Al-PILC based catalyst. The maximum removal for BPA was 80.14 ± 1.93 % after 120 min under photo-Fenton-like conditions using Al-PILCBE. The catalysts synthesized using the four catalytic supports showed good results for the removal of TCS by both processes, while for 2,6-DCP and BPA the best results were obtained using Al-PILCAE and Al-PILCBE as catalytic supports. Finally, a degradation pathway was suggested for every pollutant based on the by-products identified during the reactions by HPLC-MS. The results revealed that the materials used in this work are suitable catalysts for removing emerging pollutants from water by both Fenton- and photo-Fenton-like reactions.application/pdfapplication/mswordeng© 2023 Elsevier Ltd. This manuscript version is made available under the CC BY-NC-ND license.Photo-Fenton-like reactionAlumina-pillared clayCatalystAluminum saline slagOrganic pollutantinfo:eu-repo/semantics/article2023-02-15info:eu-repo/semantics/openAccess