RT info:eu-repo/semantics/article
T1 Photobioreactors based on microalgae-bacteria and purple phototrophic bacteria consortia: A promising technology to reduce the load of veterinary drugs from piggery wastewater
A1 López Serna, Rebeca
A1 García Guzmán, Dimas Alberto
A1 Bolado Rodríguez, Silvia
A1 Jiménez Sevilla, Juan José
A1 Lai, Foon Yin
A1 Golovko, Oksana
A1 Gago Ferrero, Pablo
A1 Ahrens, Lutz
A1 Wiberg, Karin
A1 Muñoz Torre, Raúl
K1 Algal-bacterial processes
K1 Procesos algal-bacterianos
K1 Emerging pullutants
K1 Contaminantes emergentes
K1 Microcontaminants
K1 Microcontaminantes
K1 Swine manure
K1 Estiércol porcino
AB 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.
PB Elsevier
SN 0048-9697
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/37240
UL http://uvadoc.uva.es/handle/10324/37240
LA eng
NO Science of The Total Environment, 2019. In Press
NO Producción Científica
DS UVaDOC
RD 20-abr-2024