Comprehensive evaluation of a novel pilot-scale UVA-LED photoreactor for water treatment applications: Characterization, catalytic efficiency, energy performance and economic viability

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dc.contributor.authorCabrera-Reina, A.
dc.contributor.authorSalazar-Gonzalez, R.
dc.contributor.authorMarugan, J.
dc.contributor.authorPerez, J. A. Sanchez
dc.contributor.authorCuevas, S. Miralles-
dc.date.accessioned2025-01-20T16:15:43Z
dc.date.available2025-01-20T16:15:43Z
dc.date.issued2024
dc.description.abstractA comprehensive assessment was conducted on a novel pilot plant employing a tubular photo-reactor configuration integrated with UVA-LED technology for advanced municipal wastewater treatment applications. The plant consists of eight UVA-LED strips (150 LEDs/strip, 348-400 nm with peak emission at 370 nm) achieving a maximum irradiance of 28.1 W/m(2) at 100 % power of the LED, symmetrically distributed across two borosilicate tubes. The iron concentration (0.025-0.100 mM) and UVA-LED irradiance (1.4-28.1 W/m(2)) combined effect on the photo-Fenton process efficiency was thoroughly examined in synthetic tap water and synthetic municipal wastewater treatment plant (MWWTP) secondary effluent using sulfamethoxazole as model microcontaminant. In general, an LED intensity threshold from which process efficiency reaches a plateau maximum value was found. The determination of the electrical energy per order (EEO) showed higher energy efficiencies as LED intensity decreases, iron concentration increases, and the water matrix is simpler. The lowest EEO obtained was 0.009 kWh/m3 & sdot;order for 0.10 mM iron concentration in synthetic MWWTP secondary effluent at 5 % LED intensity. The economic study revealed that the weight of operating costs is more significant than the weight of investment costs, regardless of the selected operating conditions. Working with an iron concentration of 0.10 mM helps reduce the total costs, while operating either under excess LED intensity or insufficient LED intensity negatively impacts the total treatment cost. The lowest treatment cost (0.19 <euro>/m3) was obtained with 0.10 mM iron concentration at only 10 % LED intensity. A comparison with the same process driven by natural solar radiation in a raceway pond reactor demonstrated the feasibility of the novel photo-reactor design in terms of treatment cost.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jwpe.2024.105483
dc.identifier.issn2214-7144
dc.identifier.urihttps://doi.org/10.1016/j.jwpe.2024.105483
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90509
dc.identifier.wosidWOS:001243608100003
dc.language.isoen
dc.revistaJournal of water process engineering
dc.rightsacceso restringido
dc.subjectPhoto -reactor design
dc.subjectLight -emitting diodes
dc.subjectWastewater treatment
dc.subjectPhoto -Fenton
dc.subjectContaminants of emerging concern
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleComprehensive evaluation of a novel pilot-scale UVA-LED photoreactor for water treatment applications: Characterization, catalytic efficiency, energy performance and economic viability
dc.typeartículo
dc.volumen63
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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