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Título
Current Concentrations of Zn, Cu, and As in Piggery Wastewater Compromise Nutrient Removals in Microalgae–Bacteria Photobioreactors Due to Altered Microbial Communities
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Biology
Número de la revista
8
Cita Bibliográfica
Collao, J., García-Encina, P. A., Blanco, S., Bolado-Rodríguez, S., & Fernandez-Gonzalez, N. (2022). Current concentrations of Zn, Cu, and As in piggery wastewater compromise nutrient removals in microalgae–bacteria photobioreactors due to altered microbial communities. Biology, 11(8), Article e1176. https://doi.org/10.3390/BIOLOGY11081176
Editorial
MDPI
Fecha
2022
Resumen
[EN] The treatment of pig manure is a major environmental issue, and photobioreactors contain-
ing consortia of microalgae and bacteria have proven to be a promising and sustainable treatment
alternative. This work studies the effect of Cu, Zn and As, three toxic elements frequently present in
piggery wastewater, on the performance and microbiome of photobioreactors. After dopage with
Zn (100 mg/L), Cu (100 mg/L), and As (500 μg/L), the high biomass uptake of Zn (69–81%) and
Cu (81–83%) decreased the carbon removal in the photobioreactors, inhibited the growth of Chlorella
sp., and affected heterotrophic bacterial populations. The biomass As uptake result was low (19%)
and actually promoted microalgae growth. The presence of Cu and As decreased nitrogen removal,
reducing the abundance of denitrifying bacterial populations. The results showed that metal(loid)s
significantly affected 24 bacterial genera and that they did not recover after exposure. Therefore,
this study makes an important contribution on the impact of the presence of metal(loid)s in piggery
wastewater that compromises the overall performance of PBRs, and so, the environmental and health
impact of treated effluents
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SI
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- info:eu-repo/grant/AIE/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/PID2020-113544RB-I00/ES/Recuperación de proteínas y producción de pha a partir de biomasa generada en plantas de tratamiento de aguas residuales
- info:eu-repo/grant/AIE/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/PDC2021-121861-C22/ES/Producción sostenible de bioestimulantes y biopesticidas agrícolas a partir de residuos agroindustriales
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