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Removal and environmental risk assessment of contaminants of emerging concern from irrigation waters in a semi-closed microalgae photobioreactor

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10.1016/j.envres.2020.110278
 
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García Galán, María JesúsMés informació
Matamoros Mercadal, Víctor
Uggetti, EnricaMés informacióMés informacióMés informació
Díez Montero, RubénMés informacióMés informació
García Serrano, JoanMés informacióMés informacióMés informació
Tipo de documentoArtículo
Fecha de publicación2021-03
EditorElsevier
Condiciones de accesoAcceso abierto
Attribution-NonCommercial-NoDerivs 4.0 International
Salvo que se indique lo contrario, los contenidos de esta obra estan sujetos a la licencia de Creative Commons : Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional
ProyectoINCOVER - Innovative Eco-Technologies for Resource Recovery from Wastewater (EC-H2020-689242)
MICROALGAS PARA LA PRODUCCION SOSTENIBLE DE BIOPRODUCTOS Y AGUA REGENERADA (AEI-RTI2018-099495-B-C21)
Resumen
The present study evaluated the efficiency of a semi-closed, tubular, horizontal photobioreactor (PBR) to treat a mixture of irrigation and rural drainage water, focusing in the removal of different contaminants of emerging concern (CECs), and evaluating the environmental impact of the resulting effluent. Target CECs included pharmaceuticals, personal care products and flame retardants. Of the 13 compounds evaluated, 11 were detected in the feed water entering the PBR, and diclofenac (DCF) (1107 ng L-1) and N,N-diethyl-toluamide (DEET) (699 ng L-1) were those present at the greatest concentrations. The best removal efficiencies were achieved for the pharmaceuticals diazepam (94%), lorazepam (LZP) (83%) and oxazepam (OXA) (71%), and also for ibuprofen (IBU) (70%). For the rest of the CECs evaluated, attenuation was similar to that obtained after conventional wastewater treatment, ranging from basically no elimination (carbamazepine (CBZ) and tris-(2-chloroethyl) phosphate (TCEP)) to medium efficiencies (DCF and tributyl phosphate (TBP) (50%)). Environmental risk assessment based on hazard quotients (HQs) resulted in HQ values < 0.1 (no risk associated) for most of the compounds and most of the trophic levels considered. Values between 1 and 10 (moderate risk) were obtained for tonalide (AHTN) (fish) and CBZ (invertebrates). The most sensitive trophic level was green algae, whereas fish and aquatic plants were the most resilient. Our results suggest that microalgae-based treatments could become a green, cost-effective alternative to conventional wastewater treatment regarding the efficient elimination of these contaminants.
CitaciónGarcia, M. [et al.]. Removal and environmental risk assessment of contaminants of emerging concern from irrigation waters in a semi-closed microalgae photobioreactor. "Environmental Research", Març 2021, vol. 194, p. 110278:1-110278:11. 
URIhttp://hdl.handle.net/2117/346607
DOI10.1016/j.envres.2020.110278
ISSN1096-0953
Versión del editorhttps://www.sciencedirect.com/science/article/abs/pii/S0013935120311750
Colecciones
  • Departament d'Enginyeria Civil i Ambiental - Articles de revista [2.617]
  • GEMMA - Grup d'Enginyeria i Microbiologia del Medi Ambient - Articles de revista [182]
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