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Please use this identifier to cite or link to this item: http://uvadoc.uva.es/handle/10324/23548
Title: Photodegradation and sorption govern tetracycline removal during wastewater treatment in algal ponds
Authors: Norvilla, Zane N.
Toledo Cervantes, Alma
Blanco, Saúl
Shilton, Andy
Guieysse, Benoit
Muñoz Torre, Raúl
Issue Date: 2017
Publisher: Elsevier
Description: Producción Científica
Citation: Bioresource Technology, 2017, Volume 232,Pages 35–43
Abstract: 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).
Classification: Microalgas
Aguas residuales
Peer Review: SI
DOI: https://doi.org/10.1016/j.biortech.2017.02.011
Sponsor: Ministerio de Economía, Industria y Competitividad (Project CTM2015-70442-R and Red NOVEDAR)
Publisher Version: http://www.sciencedirect.com/science/article/pii/S0960852417301189
Language: eng
URI: http://uvadoc.uva.es/handle/10324/23548
Rights: info:eu-repo/semantics/openAccess
Appears in Collections:GTA - Artículos de revista
DEP48 - Artículos de revista

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