Assessment of a novel microalgae-cork based technology for removing antibiotics, pesticides and nitrates from groundwater
Visualitza/Obre
Autor/a
Rambaldo, Lorenzo
Ávila, Héctor
Escolà Casas, Mònica
Pérez-Burillo, Javier
Mann, David G.
Biel, Carme
Rizzo, Luigi
Bayona, Josep M.
Matamoros, Víctor
Data de publicació
2022-04-29ISSN
0045-6535
Resum
Groundwater pollution has increased in recent years due to the intensification of agricultural and livestock activities. This results in a significant reduction in available freshwater resources. Here, we have studied the long term assessment of a green technology (1–4 L/day) based on a photobioreactor (PBR) containing immobilised microalgae–bacteria in polyurethane foam (PF) followed by a cork filter (CF) for removing nitrates, pesticides (atrazine and bromacil), and antibiotics (sulfamethoxazole and sulfacetamide) from groundwater. The prototype was moderately effective for removing nitrates (58%) at an HRT of 8 days, while its efficiency decreased at a HRT of 4 and 2 days (<20% removal). The combined use of PBR-CF enabled antibiotics and pesticides to be attenuated by up to 95% at an HRT of 8 days, but their attenuation decreased with shorter HRT, with pesticides being the compounds most affected (reducing from 97 to 98% at an HRT of 8 days to 23–45% at an HRT of 2 days). Pesticide transformation products were identified after the CF, supporting biodegradation as the main attenuation process. A gene-based metataxonomic assessment linked the attenuation of micropollutants to the presence of specific pesticide biodegradation species (e.g. genus Phenylobacterium, Sphingomonadaceae, and Caulobacteraceae). Therefore, the results highlighted the potential use of microalgae and cork to treat polluted groundwater.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
502 - Natura. Estudi, conservació i protecció de la natura
Pàgines
10
Publicat per
Elsevier
Publicat a
Chemosphere
Citació
Rambaldo, Lorenzo, Héctor Ávila, Mònica Escolà Casas, Miriam Guivernau, Marc Viñas, Rosa Trobajo, and Javier Pérez-Burillo et al. 2022. "Assessment Of A Novel Microalgae-Cork Based Technology For Removing Antibiotics, Pesticides And Nitrates From Groundwater". Chemosphere 301: 134777. doi:10.1016/j.chemosphere.2022.134777.
Número de l'acord de la subvenció
EC/LIFE/LIFE18 ENV-ES-000199/EU/Green solutions for treating groundwater pollution to meet drinking water directive standards/LIFE SPOT
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/CTM2017-91355-EXP/ES/EXPLORANDO LA QUIMICA DE LA SIMBIOSIS EN LA ATENUACION DE CONTAMINANTES EMERGENTES. AVANCES EN EL TRATAMIENTO BIOLOGICO DE AGUAS RESIDUALES/SIMAGUA
Programa
Aigües Marines i Continentals
Sostenibilitat en Biosistemes
Protecció Vegetal Sostenible
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