RT Journal Article
T1 Removal of antracene and benzo[a]pyrene from soil-washing synthetic emulsions by Fenton and solar photo-Fenton oxidation
A1 Ayedi, Karima
A1 Moreno De La Fuente, Yaiza
A1 Herraiz Carboné, Miguel
A1 Cotillas Soriano, Salvador
A1 Prisciandaro, Marina
A1 Santos López, Aurora
A1 Domínguez Torre, Carmen María
AB This study examines the treatment of polycyclic aromatic hydrocarbons (PAHs) aqueous emulsions, equivalent to those obtained from soil-washing, using Fenton and solar photo-Fenton oxidation for pollutant removal and surfactant recovery in water treatment applications. PAHs, persistent contaminants in industrial wastewater, require sustainable treatment approaches. Soil was contaminated with anthracene (ANT) and benzo[a]pyrene (BaP) and washed with sodium dodecyl sulfate (SDS) at a mass liquid-to-soil ratio of 2:1, with SDS concentrations ranging from 2500 to 10,000 mg L−1. A synthetic emulsion (SDS: 4500 mg L−1, ANT: 5 mg L−1, BaP: 5 mg L−1) was prepared and treated using low oxidant (H₂O₂: 60–240 mg L−1) and catalyst (Fe: 2.5–10 mg L−1) dosages to optimize reagent consumption. The Fenton process (pH = 3) achieved complete PAHs removal, with BaP fully degraded under all conditions and ANT requiring higher oxidant (H₂O₂, 240 mg L−1) and catalyst (Fe, 10 mg L−1) concentrations. The solar photo-Fenton process achieved up to 70 % ANT and 85 % BaP removal at near-neutral pH using ferrioxalate complexes (120 mg L−1 H2O2, 10 mg L−1 Fe). Minimal SDS degradation and negligible mineralization support surfactant recovery and reuse, enhancing process sustainability. These findings highlight the viability of light-assisted advanced oxidation processes for selective pollutant degradation in engineered water systems, supporting the development of cost-effective and environmentally friendly remediation technologies.
PB Elsevier
SN 2214-7144
YR 2025
FD 2025-06
LK https://hdl.handle.net/20.500.14352/121301
UL https://hdl.handle.net/20.500.14352/121301
LA eng
NO Ayedi, K.; Moreno-De La Fuente, Y.; Herraiz-Carboné, M.; Cotillas, S.; Prisciandaro, M.; Santos, A.; Domínguez, C. M. Removal of Antracene and Benzo[a]Pyrene from Soil-Washing Synthetic Emulsions by Fenton and Solar Photo-Fenton Oxidation. Journal of Water Process Engineering 2025, 75, 107959. https://doi.org/10.1016/j.jwpe.2025.107959.
NO This research is part of the projects PID2022-137828OB-I00 (EMULREM) and PDC2022-133095-I00 (VAL-REMSURFOX) funded by MCIN/AEI/10.13039/501100011033. Project TEC-2024/ECO-69 (CARESOIL-CM) funded by the Community of Madrid is also acknowledged. Y. Moreno-De la Fuente acknowledges the Spanish State Investigation Agency for the grant PREP2022-000074 funded by MICIU/AEI/10.13039/501100011033 and FSE+.
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Comunidad de Madrid
NO Agencia Estatal de Investigación (España)
DS Docta Complutense
RD 18 dic 2025