Informace o publikaci
First synergistic application of photocatalysis by novel graphitic carbon nitride nanomaterial and low-temperature plasma technology for highly efficient removal of pharmaceuticals from real wastewater
| Autoři | |
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| Rok publikování | 2026 |
| Druh | Recenzovaný odborný článek |
| Časopis / Zdroj | Journal of Water Process Engineering |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://www.sciencedirect.com/science/article/pii/S2214714426001030 |
| Doi | https://doi.org/10.1016/j.jwpe.2026.109545 |
| Klíčová slova | Wastewater treatment; Combined processes; Low-temperature plasma; Photocatalysis; Graphitic carbon nitride |
| Popis | This study investigates, for the first time, the combined application of visible-light photocatalysis using a novel graphitic carbon nitride (gCN) nanomaterial and low-temperature plasma generated in air by a multi-hollow surface dielectric barrier discharge (MSDBD) for the treatment of real wastewater effluent. The combined photocatalysis+plasma process exhibited high performance for a broad range of pharmaceutical compounds, with efficiencies that nearly achieved or exceeded the 80% removal threshold defined by the new EU Urban Wastewater Treatment Directive 2024/3019 (EU UWWTD 2024/3019). Analysis of reactive oxygen species (ROS) demonstrated that the pollutant degradation in the combined photocatalysis+plasma system was primarily driven by plasma-generated species, such as ozone (O3), nitrates (NO3-), and nitrites (NO2-), whereas the contributions of superoxide anion radical (O2-& sdot;) and singlet oxygen (1O2) generated by plasma and photocatalysis individually were minor. Fixation of ammonia in wastewater treated by MSDBD was not detected. The presence of gCN mitigated plasma-induced acidification, maintaining the wastewater pH near neutral. Investigation of the sulfamethoxazole (SMX) degradation pathway revealed an approximately 50% reduction in N4-acetylsulfamethoxazole, indicating partial mitigation of this persistent transformation product of environmental concern and underscoring the advantages of the combined plasma+photocatalytic process. |
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