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Por favor, use este identificador para citar o enlazar este ítem: http://uvadoc.uva.es/handle/10324/23548
Título: Photodegradation and sorption govern tetracycline removal during wastewater treatment in algal ponds
Autor: Norvilla, Zane N.
Toledo Cervantes, Alma
Blanco, Saúl
Shilton, Andy
Guieysse, Benoit
Muñoz Torre, Raúl
Año del Documento: 2017
Editorial: Elsevier
Descripción: Producción Científica
Documento Fuente: Bioresource Technology, 2017, Volume 232,Pages 35–43
Resumen: The degradation of the antibiotic tetracycline, supplied at 100 µg L−1 in domestic wastewater, was studied in an outdoor, pilot scale, high rate algal pond (HRAP). Effective operation was demonstrated with the biomass concentration and the chemical oxygen demand removal efficiency averaging 1.2 ± 0.1 gTSS L−1 and 80 ± 4%, respectively, across all operational periods. Tetracycline removal exceeded 93% and 99% when the HRAP was operated at hydraulic retention times of 4 and 7 days, respectively. Batch tests and pulse testing during HRAP operation repeatedly evidenced the significance of photodegradation as a removal mechanism. Sorption dominated tetracycline removal during the night, but accounted for less than 6% of the total pollutant removal based on sorbed tetracycline extracted from biomass. Overall, these results provide the first demonstration of efficient antibiotic removal, occurring mainly via indirect photodegradation, during relevant HRAP operation (low pollutant concentration, domestic wastewater and natural sunlight).
Palabras Clave: Microalgas
Aguas residuales
Revisión por Pares: SI
DOI: https://doi.org/10.1016/j.biortech.2017.02.011
Patrocinador: Ministerio de Economía, Industria y Competitividad (Project CTM2015-70442-R and Red NOVEDAR)
Version del Editor: http://www.sciencedirect.com/science/article/pii/S0960852417301189
Idioma: eng
URI: http://uvadoc.uva.es/handle/10324/23548
Derechos: info:eu-repo/semantics/openAccess
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