2026-05-05T21:10:44Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/762912025-07-08T19:04:09Zcom_10324_35294com_10324_952com_10324_894col_10324_35295

Viral RNA reduction from wastewaters using microalgae-based treatments: Elucidating the effect of light and zero-valent iron nanoparticles Torres Franco, Andrés Felipe Leroy Freitas, Deborah García Encina, Pedro Antonio Muñoz Torre, Raúl E. coli Microalgae-based wastewater treatment Viral RNA reduction Zero-valent iron nanoparticles 3108.09 Virus 31 Ciencias Agrarias Producción Científica Microalgae-based systems can potentially inactivate E. coli and viruses. In this work, batch algal-bacterial photobioreactors were operated to elucidate the effect of zero-valent iron (ZVI) nanoparticles and light in- tensity on the reduction of viral RNA (MS2, Phi6 and Bovine coronavirus, BCoV) and uidA gene (E. coli) during secondary wastewater treatment. Biodegradation and abiotic control photoreactors were operated at high light intensity (1100 μE m 2 s 1), with and without ZVI-nanoparticles addition (HLNP and HL) and low light intensity (450 μE m 2 s 1), without nanoparticles (LL). After 72 h, HLNP matched or increased the reductions of at least 99.9 % for viruses and 99 % for uidA achieved within 192 h in HL and LL. Oxidative reactions in the presence of ZVI-nanoparticles seemed to mediate the decay of viral RNA and uidA. This work demonstrated for the first time the potential for enhanced reduction of viral RNA and E. coli by ZVI-nanoparticles during microalgae-based wastewater treatment. Junta de Castilla y León y el programa FEDER (proyectos CLU 2017-09, CL-EI-2021-07, UIC315 y VA266P20) 2025-07-08T12:03:14Z 2025-07-08T12:03:14Z 2025 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bioresource Technology, 2025, vol.427, p. 132389 0960-8524 https://uvadoc.uva.es/handle/10324/76291 10.1016/j.biortech.2025.132389 132389 Bioresource Technology 427 eng https://www.sciencedirect.com/science/article/pii/S0960852425003554 Attribution-NonCommercial-NoDerivatives 4.0 Internacional info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2025 The Author(s) application/pdf Elsevier https://uvadoc.uva.es/bitstream/10324/76291/4/Viral-RNA-reduction-from-wastewaters.pdf.jpg Hispana TEXT http://creativecommons.org/licenses/by-nc-nd/4.0/ UVaDOC. Repositorio Documental de la Universidad de Valladolid https://uvadoc.uva.es/handle/10324/76291