2024-03-28T21:17:57Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/372402021-06-24T07:49:17Zcom_10324_35294com_10324_952com_10324_894com_10324_1173com_10324_931col_10324_35295col_10324_1371
Photobioreactors based on microalgae-bacteria and purple phototrophic bacteria consortia: A promising technology to reduce the load of veterinary drugs from piggery wastewater
López Serna, Rebeca
García Guzmán, Dimas Alberto
Bolado Rodríguez, Silvia
Jiménez Sevilla, Juan José
Lai, Foon Yin
Golovko, Oksana
Gago Ferrero, Pablo
Ahrens, Lutz
Wiberg, Karin
Muñoz Torre, Raúl
Producción Científica
Traditional swine manure treatments are not fully effective in the removal of veterinary drugs. Moreover, they are costly and entail a significant carbon footprint in many cases. Innovative biological approaches based on phototrophic microorganisms have recently emerged as promising alternatives to overcome those limitations. This work evaluated the removal of 19 veterinary drugs (i.e., 16 antibiotics, 1 analgesic, 1 anti-parasitic and 1 hormone) from piggery wastewater (PWW) in two open photobioreactors (PBR) operated with a consortium of microalgae-bacteria (AB-PBR) and purple photosynthetic bacteria (PPB-PBR). Multiple hydraulic retention times (HRT), in particular 11, 8 and 4 days, were tested during stage I, II and III, respectively. Ten out of 19 target compounds were detected with inlet drug concentrations ranging from ‘non-detected’ (n.d.) to almost 23,000 ng L−1 for the antibiotic oxytetracycline. Moreover, three of the antibiotics (i.e., enrofloxacin, sulfadiazine and oxytetracycline) were found at concentrations above the analytical linearity range in some or all of the samples under study. AB-PBR supported higher removal efficiencies (REs) than PPB-PBR, except for danofloxacin. Overall, REs progressively decreased when decreasing the HRT. The highest REs (>90%) were observed for doxycycline (95 ± 3%) and oxytetracycline (93 ± 3%) in AB-PBR during stage I. The other drugs, except sulfadimidine that was the most recalcitrant, showed REs above 70% during stage I in the same photobioreactor. In contrast, no removal was observed for danofloxacin in AB-PBR during stage III, sulfadimidine in PPB-PBR during stage III or marbofloxacin in PPB-PBR during the entire experiment.
2019-07-22
2019-07-22
2019
info:eu-repo/semantics/article
Science of The Total Environment, 2019. In Press
0048-9697
http://uvadoc.uva.es/handle/10324/37240
https://doi.org/10.1016/j.scitotenv.2019.07.126
eng
https://www.sciencedirect.com/science/article/pii/S0048969719332395
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2019 Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Elsevier