2026-05-05T18:24:50Zhttps://uvadoc.uva.es/oai/request

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

00925njm 22002777a 4500 dc Torres Franco, Andrés Felipe author Leroy Freitas, Deborah author García Encina, Pedro Antonio author Muñoz Torre, Raúl author 2025 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. 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 Viral RNA reduction from wastewaters using microalgae-based treatments: Elucidating the effect of light and zero-valent iron nanoparticles