RT Journal Article
T1 Novel carbon-based materials for sustainable water treatment: Perfluorooctanoic acid adsorption and adsorbent regeneration via thermally activated persulfate oxidation
A1 Sánchez Yepes, Andrés
A1 Santos López, Aurora
A1 Romero Salvador, Arturo
A1 Lorenzo Fernández, David
A1 Ferreria, Ana Paula
A1 Gomes, Helder T.
AB Rapid increases in municipal and industrial waste pose significant environmental challenges, prompting the need for sustainable technologies. This study reports a framework that combines the production of adsorbents with value-added processes to be used in the remediation of water streams polluted by perfluorooctanoic acid (PFOA) as a target compound. This framework is based on adsorption and regeneration cycles using thermally persulfate activated advanced oxidation process. Carbon-rich waste, including olive pomace and urban plastic residues, was used to synthesize five carbonaceous materials—activated carbon, hydrochar, pyrochar, activated carbon from hydrochar, and carbon nanotubes—via hydrothermal carbonization and pyrolysis. The adsorbents demonstrated PFOA adsorption capacities ranging from 55 to 303 mg⋅g⁻¹ , with activated carbon achieving the highest (303 mg⋅g⁻¹) due to its microporous structure. Adsorption equilibrium followed the Langmuir model, while adsorption kinetics were best described by a pseudo-second-order model. Regeneration was performed using thermally activated persulfate at 60◦C. Activated carbon recovered over 70 % of its adsorption capacity with lower oxidant consumption, whereas hydrochar and carbon nanotubes exhibited higher oxidant use and greater structural changes. These results underscore the potential of waste-derived carbon materials for sustainable water treatment and circular economy applications, providing effective removal of persistent pollutants like PFOA with great promise.
PB Elsevier
SN 2213-3437
YR 2025
FD 2025-11-05
LK https://hdl.handle.net/20.500.14352/133285
UL https://hdl.handle.net/20.500.14352/133285
LA eng
NO ánchez-Yepes, Andrés, et al. «Novel Carbon-Based Materials for Sustainable Water Treatment: Perfluorooctanoic Acid Adsorption and Adsorbent Regeneration via Thermally Activated Persulfate Oxidation». Journal of Environmental Chemical Engineering, vol. 13, n.o 6, diciembre de 2025, p. 120084. DOI.org (Crossref), https://doi.org/10.1016/j.jece.2025.120084.
DS Docta Complutense
RD 16 may 2026