RT dataset
T1 Current concentrations of Zn, Cu, and As in piggery wastewater compromise nutrient removals in microalgae-bacteria photobioreactors due to altered microbial communities.
A1 Collao, Javiera
A1 García Encina, Pedro Antonio
A1 Blanco, Saul
A1 Bolado Rodríguez, Silvia
A1 Fernandez Gonzalez, Nuria
A2 MDPI
K1 Heavy metals
K1 Microbiome
K1 nutrient removal
K1 swine
K1 toxic elements
AB The treatment of pig manure is a major environmental issue, and photobioreactors containing 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.
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/78206
UL https://uvadoc.uva.es/handle/10324/78206
LA spa
NO Biology 2022, 11(8), 1176; https://doi.org/10.3390/biology11081176
NO Instituto de Procesos Sostenibles
DS UVaDOC
RD 01-oct-2025