RT info:eu-repo/semantics/article
T1 Photodegradation and sorption govern tetracycline removal during wastewater treatment in algal ponds
A1 Norvilla, Zane N.
A1 Toledo Cervantes, Alma
A1 Blanco, Saúl
A1 Shilton, Andy
A1 Guieysse, Benoit
A1 Muñoz Torre, Raúl
K1 Microalgas
K1 Aguas residuales
AB 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).
PB Elsevier
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/23548
UL http://uvadoc.uva.es/handle/10324/23548
LA eng
NO Bioresource Technology, 2017,  Volume 232,Pages 35–43
NO Producción Científica
DS UVaDOC
RD 23-abr-2024